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Previous year question hub

Dual Nature Of Radiation - Modern Physics - Physics Previous Year Questions

Practice Dual Nature Of Radiation - Modern Physics - Physics previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

173Papers
24Years
209Questions
1Topics

Dual Nature Of Radiation question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Dual Nature Of Radiation. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 106 50.7%
Medium 101 48.3%
Hard 2 1%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 191 91.4%
Numerical Answer Type (NAT) 18 8.6%

Subject weightage

Top subjects by unique question coverage.

Physics
209 Qs

Most asked topics

Top topics across the included previous year papers.

Modern Physics
209 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Dual Nature Of Radiation
209 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

JEE Main 2026 (Online) 5th April Morning Shift
2 Qs
JEE Main 2026 (Online) 8th April Evening Shift
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JEE Main 2026 (Online) 2nd April Morning Shift
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JEE Main 2026 (Online) 4th April Evening Shift
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JEE Main 2026 (Online) 5th April Evening Shift
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JEE MAIN 2026 ONLINE 21ST JANUARY EVENING SHIFT
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JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT
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JEE MAIN 2020 ONLINE 4TH SEPTEMBER MORNING SLOT
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JEE MAIN 2018 ONLINE 16TH APRIL MORNING SLOT
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JEE MAIN 2017 OFFLINE
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JEE MAIN 2016 OFFLINE
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JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT
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JEE MAIN 2016 ONLINE 9TH APRIL MORNING SLOT
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JEE MAIN 2015 OFFLINE
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JEE MAIN 2013 OFFLINE
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AIEEE 2012
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AIEEE 2003
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AIEEE 2002
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Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
JEE Main 2026 (Online) 2nd April Morning Shift20261View paper
JEE Main 2026 (Online) 4th April Evening Shift20261View paper
JEE Main 2026 (Online) 4th April Morning Shift20261View paper
JEE Main 2026 (Online) 5th April Evening Shift20261View paper
JEE Main 2026 (Online) 5th April Morning Shift20262View paper
JEE Main 2026 (Online) 6th April Evening Shift20261View paper
JEE Main 2026 (Online) 8th April Evening Shift20262View paper
JEE MAIN 2026 ONLINE 21ST JANUARY EVENING SHIFT20261View paper
JEE MAIN 2026 ONLINE 21ST JANUARY MORNING SHIFT20261View paper
JEE MAIN 2026 ONLINE 22ND JANUARY EVENING SHIFT20261View paper
JEE MAIN 2026 ONLINE 23RD JANUARY MORNING SHIFT20261View paper
JEE MAIN 2026 ONLINE 24TH JANUARY EVENING SHIFT20261View paper
JEE MAIN 2026 ONLINE 28TH JANUARY EVENING SHIFT20261View paper
JEE MAIN 2026 ONLINE 28TH JANUARY MORNING SHIFT20261View paper
JEE MAIN 2025 ONLINE 22ND JANUARY EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 22ND JANUARY MORNING SHIFT20252View paper
JEE MAIN 2025 ONLINE 23RD JANUARY EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 23RD JANUARY MORNING SHIFT20251View paper
JEE MAIN 2025 ONLINE 24TH JANUARY EVENING SHIFT20252View paper
JEE MAIN 2025 ONLINE 24TH JANUARY MORNING SHIFT20251View paper
JEE MAIN 2025 ONLINE 28TH JANUARY EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 28TH JANUARY MORNING SHIFT20251View paper
JEE MAIN 2025 ONLINE 29TH JANUARY EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 29TH JANUARY MORNING SHIFT20252View paper
JEE MAIN 2025 ONLINE 2ND APRIL EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 2ND APRIL MORNING SHIFT20251View paper
JEE MAIN 2025 ONLINE 3RD APRIL MORNING SHIFT20252View paper
JEE MAIN 2025 ONLINE 4TH APRIL MORNING SHIFT20252View paper
JEE MAIN 2025 ONLINE 7TH APRIL EVENING SHIFT20251View paper
JEE MAIN 2025 ONLINE 8TH APRIL EVENING SHIFT20251View paper
JEE MAIN 2024 ONLINE 1ST FEBRUARY EVENING SHIFT20242View paper
JEE MAIN 2024 ONLINE 1ST FEBRUARY MORNING SHIFT20241View paper
JEE MAIN 2024 ONLINE 27TH JANUARY EVENING SHIFT20241View paper
JEE MAIN 2024 ONLINE 29TH JANUARY EVENING SHIFT20241View paper
JEE MAIN 2024 ONLINE 29TH JANUARY MORNING SHIFT20241View paper
JEE MAIN 2024 ONLINE 30TH JANUARY EVENING SHIFT20242View paper
JEE MAIN 2024 ONLINE 30TH JANUARY MORNING SHIFT20241View paper
JEE MAIN 2024 ONLINE 31ST JANUARY EVENING SHIFT20241View paper
JEE MAIN 2024 ONLINE 31ST JANUARY MORNING SHIFT20241View paper
JEE MAIN 2024 ONLINE 4TH APRIL EVENING SHIFT20241View paper
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JEE MAIN 2023 ONLINE 10TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 10TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 11TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 11TH APRIL MORNING SHIFT20232View paper
JEE MAIN 2023 ONLINE 12TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 13TH APRIL EVENING SHIFT20232View paper
JEE MAIN 2023 ONLINE 13TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 15TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 1ST FEBRUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 1ST FEBRUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 24TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 24TH JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 25TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 25TH JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 29TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 29TH JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 30TH JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 30TH JANUARY MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 31ST JANUARY EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 31ST JANUARY MORNING SHIFT20232View paper
JEE MAIN 2023 ONLINE 6TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 6TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2023 ONLINE 8TH APRIL EVENING SHIFT20231View paper
JEE MAIN 2023 ONLINE 8TH APRIL MORNING SHIFT20231View paper
JEE MAIN 2022 ONLINE 24TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 24TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 25TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 25TH JULY MORNING SHIFT20221View paper
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JEE MAIN 2022 ONLINE 26TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 26TH JUNE EVENING SHIFT20222View paper
JEE MAIN 2022 ONLINE 26TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 27TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 28TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 29TH JULY EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 29TH JULY MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 29TH JUNE EVENING SHIFT20221View paper
JEE MAIN 2022 ONLINE 29TH JUNE MORNING SHIFT20221View paper
JEE MAIN 2022 ONLINE 30TH JUNE MORNING SHIFT20221View paper
JEE Main 2021 (Online) 24th February Evening Shift20212View paper
JEE Main 2021 (Online) 24th February Morning Shift20211View paper
JEE Main 2021 (Online) 25th February Evening Shift20212View paper
JEE Main 2021 (Online) 25th February Morning Shift20211View paper
JEE Main 2021 (Online) 26th February Evening Shift20212View paper
JEE Main 2021 (Online) 26th February Morning Shift20211View paper
JEE MAIN 2021 ONLINE 16TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 16TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 17TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 17TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 18TH MARCH EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 18TH MARCH MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 1ST SEPTEMBER EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 20TH JULY EVENING SHIFT20212View paper
JEE MAIN 2021 ONLINE 20TH JULY MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 22TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 25TH JULY EVENING SHIFT20213View paper
JEE MAIN 2021 ONLINE 25TH JULY MORNING SHIFT20212View paper
JEE MAIN 2021 ONLINE 26TH AUGUST EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 26TH AUGUST MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH AUGUST EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH AUGUST MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH JULY EVENING SHIFT20211View paper
JEE MAIN 2021 ONLINE 27TH JULY MORNING SHIFT20211View paper
JEE MAIN 2021 ONLINE 31ST AUGUST EVENING SHIFT20212View paper
JEE MAIN 2021 ONLINE 31ST AUGUST MORNING SHIFT20211View paper
JEE MAIN 2020 ONLINE 2ND SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 2ND SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 3RD SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 3RD SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 4TH SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 4TH SEPTEMBER MORNING SLOT20202View paper
JEE MAIN 2020 ONLINE 5TH SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 5TH SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 6TH SEPTEMBER EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 6TH SEPTEMBER MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 7TH JANUARY EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 7TH JANUARY MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 8TH JANUARY EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 8TH JANUARY MORNING SLOT20201View paper
JEE MAIN 2020 ONLINE 9TH JANUARY EVENING SLOT20201View paper
JEE MAIN 2020 ONLINE 9TH JANUARY MORNING SLOT20202View paper
JEE MAIN 2019 ONLINE 10TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 10TH JANUARY MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 11TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 11TH JANUARY MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 12TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 12TH JANUARY EVENING SLOT20192View paper
JEE MAIN 2019 ONLINE 12TH JANUARY MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 8TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 8TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH APRIL EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH APRIL MORNING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH JANUARY EVENING SLOT20191View paper
JEE MAIN 2019 ONLINE 9TH JANUARY MORNING SLOT20191View paper
JEE MAIN 2018 ONLINE 15TH APRIL EVENING SLOT20181View paper
JEE MAIN 2018 ONLINE 15TH APRIL MORNING SLOT20181View paper
JEE MAIN 2018 ONLINE 16TH APRIL MORNING SLOT20182View paper
JEE MAIN 2017 OFFLINE20172View paper
JEE MAIN 2017 ONLINE 8TH APRIL MORNING SLOT20171View paper
JEE MAIN 2017 ONLINE 9TH APRIL MORNING SLOT20171View paper
JEE MAIN 2016 OFFLINE20161View paper
JEE MAIN 2016 ONLINE 10TH APRIL MORNING SLOT20161View paper
JEE MAIN 2016 ONLINE 9TH APRIL MORNING SLOT20161View paper
JEE MAIN 2015 OFFLINE20151View paper
JEE MAIN 2013 OFFLINE20131View paper
AIEEE 201220121View paper
AIEEE 201120111View paper
AIEEE 201020102View paper
AIEEE 200920091View paper
AIEEE 200820083View paper
AIEEE 200720071View paper
AIEEE 200620063View paper
AIEEE 200520052View paper
AIEEE 200420042View paper
AIEEE 200320031View paper
AIEEE 200220022View paper

All Dual Nature Of Radiation previous year questions

Practice every matching question in batches of 20, with every available option.

1
2002 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2002
Sodium and copper have work functions \(2.3\) \(eV\) and \(4.5\) \(eV\) respectively. Then the ratio of the wavelengths is nearest to
A
\(1:2\)
B
\(4:1\)
C
\(2:1\)
D
\(1:4\)
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2
2002 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2002
Formation of covalent bonds in compounds exhibits
A
wave nature of electron
B
particle nature of electron
C
both wave and particle nature of electron
D
none of these
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3
2003 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2003
Two identical photo-cathodes receive light of frequencies \({f_1}\) and \({f_2}\). If the velocities of the photo electrons (of mass \(m\) ) coming out are respectively \({v_1}\) and \({v_2},\) then
A
\(v_1^2 - v_2^2 = {{2h} \over m}\left( {{f_1} - {f_2}} \right)\)
B
\({v_1} + {v_2} = {\left[ {{{2h} \over m}\left( {{f_1} + {f_2}} \right)} \right]^{1/2}}\)
C
\(v_1^2 + v_2^2 = {{2h} \over m}\left( {{f_1} + {f_2}} \right)\)
D
\({v_1} - {v_2} = {\left[ {{{2h} \over m}\left( {{f_1} - {f_2}} \right)} \right]^{1/2}}\)
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4
2004 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2004
The work function of a substance is \(4.0\) \(eV.\) The longest wavelength of light that can cause photo-electron emission from this substance is approximately.
A
\(310\) \(nm\)
B
\(400\) \(nm\)
C
\(540\) \(nm\)
D
\(220\) \(nm\)
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5
2004 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2004
According to Einstein's photoelectric equation, the plot of the kinetic energy of the emitted photo electrons from a metal \(Vs\) the frequency, of the incident radiation gives as straight the whose slope
A
depends both on the intensity of the radiation and the metal used
B
depends on the intensity of the radiation
C
depends on the nature of the metal used
D
is the same for the all metals and independent of the intensity of the radiation
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6
2005 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2005
If the kinetic energy of a free electron doubles, it's deBroglie wavelength changes by the factor
A
\(2\)
B
\({1 \over 2}\)
C
\({\sqrt 2 }\)
D
\({1 \over {\sqrt 2 }}\)
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7
2005 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2005
A photocell is illuminated by a small bright source placed \(1\) \(m\) away. When the same source of light is placed \({1 \over 2}\) \(m\) away, the number of electrons emitted by photo-cathode would
A
increases by a factor of \(4\)
B
decreases by a factor of \(4\)
C
increases by a factor of \(2\)
D
decreases by a factor of \(2\)
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8
2006 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2006
The time taken by a photoelectron to come out after the photon strikes is approximately
A
\({10^{ - 4}}\,s\)
B
\({10^{ - 10}}\,s\)
C
\({10^{ - 16}}\,s\)
D
\({10^{ - 1}}\,s\)
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9
2006 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2006
The threshold frequency for a metallic surface corresponds to an energy of \(6.2\) \(eV\) and the stopping potential for a radiation incident on this surface is \(5V.\) The incident radiation lies in
A
ultra-violet region
B
infra-red region
C
visible region
D
\(x\)-ray region
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10
2006 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2006
The anode voltage of a photocell is kept fixed. The wavelength \(\lambda\) of the light falling on the cathode is gradually changed. The plate current \({\rm I}\) of the photocell varies as follows
A
AIEEE 2006 Physics - Dual Nature of Radiation Question 193 English Option 1
B
AIEEE 2006 Physics - Dual Nature of Radiation Question 193 English Option 2
C
AIEEE 2006 Physics - Dual Nature of Radiation Question 193 English Option 3
D
AIEEE 2006 Physics - Dual Nature of Radiation Question 193 English Option 4
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11
2007 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2007
Photon of frequency \(v\) has a momentum associated with it. If \(c\) is the velocity of light, the momentum is
A
\(hv/c\)
B
\(v/c\)
C
\(h\) \(v\) \(c\)
D
\(hv/{c^2}\)
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12
2008 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2008
Wave property of electrons implies that they will show diffraction effects. Davisson and Germer demonstrated this by diffracting electrons from crystals. The law governing the diffraction from a crystal is obtained by requiring that electron waves reflected from the planes of atoms in a crystal interfere constructively (see figure). AIEEE 2008 Physics - Dual Nature of Radiation Question 191 English

If a strong diffraction peak is observed when electrons are incident at an angle \('i'\) from the normal to the crystal planes with distance \('d'\) between them (see figure), de Broglie wavelength \({\lambda _{dB}}\) of electrons can be calculated by the relationship (\(n\) is an integer)

A
\(d\,\sin \,i = n{\lambda _{dB}}\)
B
\(2d\,\cos \,i = n{\lambda _{dB}}\)
C
\(2d\,\sin \,i = n{\lambda _{dB}}\)
D
\(d\,\cos \,i = n{\lambda _{dB}}\)
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13
2008 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2008
Wave property of electrons implies that they will show diffraction effects. Davisson and Germer demonstrated this by diffracting electrons from crystals. The law governing the diffraction from a crystal is obtained by requiring that electron waves reflected from the planes of atoms in a crystal interfere constructively (see figure). AIEEE 2008 Physics - Dual Nature of Radiation Question 192 English

Electrons accelerated by potential \(V\) are diffracted from a crystal. If \(d = 1\mathop A\limits^ \circ\) and \(i = {30^ \circ },\,\,\,V\) should be about
$$\left( {h = 6.6 \times {{10}^{ - 34}}Js,{m_e} = 9.1 \times {{10}^{ - 31}}kg,\,e = 1.6 \times {{10}^{ - 19}}C} \right)$$

A
\(2000\) \(V\)
B
\(50\) \(V\)
C
\(500\) \(V\)
D
\(1000\) \(V\)
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14
2008 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2008
In an experiment, electrons are made to pass through a narrow slit of width \('d'\) comparable to their de Broglie wavelength. They are detected on a screen at a distance \('D'\) from the slit (see figure). AIEEE 2008 Physics - Dual Nature of Radiation Question 209 English

Which of the following graphs can be expected to represent the number of electrons \('N'\) detected as a function of the detector position \('y'\left( {y = 0} \right.\) corresponds to the middle of the slit\(\left. \, \right)\)

A
AIEEE 2008 Physics - Dual Nature of Radiation Question 209 English Option 1
B
AIEEE 2008 Physics - Dual Nature of Radiation Question 209 English Option 2
C
AIEEE 2008 Physics - Dual Nature of Radiation Question 209 English Option 3
D
AIEEE 2008 Physics - Dual Nature of Radiation Question 209 English Option 4
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15
2009 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2009
The surface of a metal is illuminated with the light of \(400\) \(nm.\) The kinetic energy of the ejected photoelectrons was found to be \(1.68\) \(eV.\) The work function of the metal is : \(\left( {hc = 1240eV.nm} \right)\)
A
\(1.41\) \(eV\)
B
\(1.51\) \(eV\)
C
\(1.68\) \(eV\)
D
\(3.09\) \(eV\)
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16
2010 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2010
If a source of power \(4kW\) produces \({10^{20}}\) photons/second, the radiation belongs to a part of the spectrum called
A
\(X\) -rays
B
ultraviolet rays
C
microwaves
D
\(\gamma\) - rays
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17
2010 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2010
Statement - \(1\) : When ultraviolet light is incident on a photocell, its stopping potential is \({V_0}\) and the maximum kinetic energy of the photoelectrons is \({K_{\max }}\). When the ultraviolet light is replaced by \(X\)-rays, both \({V_0}\) and \({K_{\max }}\) increase.

Statement - \(2\) : Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

A
Statement - \(1\) is true, Statement - \(2\) is true; Statement - \(2\) is the correct explanation of Statement - \(1\)
B
Statement - \(1\) is true, Statement - \(2\) is true; Statement - \(2\) is not the correct explanation of Statement - \(1\)
C
Statement - \(1\) is is false, Statement - \(2\) is true
D
Statement - \(1\) is is true, Statement - \(2\) is false
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18
2011 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2011
This question has Statement - \(1\) and Statement - \(2\). Of the four choices given after the statements, choose the one that best describes the two statements.

Statement - \(1\) : A metallic surface is irradiated by a monochromatic light of frequency \(v > {v_0}\) (the threshold frequency). The maximum kinetic energy and the stopping potential are \({K_{\max }}\) and \({V_0}\) respectively. If the frequency incident on the surface is doubled, both the \({K_{\max }}\) anmd \({V_0}\) are also doubled.
Statement - \(2\) : The maximum kinetic energy and the stopping potential of photoelectrons emitted from a surface are linearly dependent on the frequency of incident light.

A
Statement - \(1\) is true, Statement - \(2\) is true, Statement - \(2\) is the correct explanation of Statement - \(1\).
B
Statement - \(1\) is true, Statement - \(2\) is true, Statement - \(2\) is not the correct explanation of Statement - \(1\).
C
Statement - \(1\) is false, Statement - \(2\) is true.
D
Statement - \(1\) is true, Statement - \(2\) is false.
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19
2012 · Physics · Modern Physics · Dual Nature Of Radiation
AIEEE 2012
This question has Statement 1 and Statement 2. Of the four choices given after the statements, choose the one that best describes the two statements.

Statement 1 : Davisson - Germer experiment established the wave nature of electrons.

Statement 2 : If electrons have wave nature, they can interfere and show diffraction.
A
Statement 1 is true, Statement 2 is false
B
Statement 1 is true, Statement 2 is true, Statement 2 is the correct explanation for Statement 1.
C
Statement 1 is true, Statement 2 is true, Statement 2 is not the correct explanation of Statement 1.
D
Statement 1 is false, Statement 2 is true.
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20
2013 · Physics · Modern Physics · Dual Nature Of Radiation
JEE MAIN 2013 OFFLINE
The anode voltage of a photocell is kept fixed. The wavelength \(\lambda\) of the light falling on the cathode is gradually changed. The plate current \(I\) of the photocell varies as follows :
A
JEE Main 2013 (Offline) Physics - Dual Nature of Radiation Question 190 English Option 1
B
JEE Main 2013 (Offline) Physics - Dual Nature of Radiation Question 190 English Option 2
C
JEE Main 2013 (Offline) Physics - Dual Nature of Radiation Question 190 English Option 3
D
JEE Main 2013 (Offline) Physics - Dual Nature of Radiation Question 190 English Option 4
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