JEE MAIN 2022 ONLINE 26TH JULY EVENING SHIFT
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Mass numbers of two nuclei are in the ratio of \(4: 3\). Their nuclear densities will be in the ratio of
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Finest gold is red in colour, as the size of the particles increases, it appears purple then blue and finally gold.
Reason R : The colour of the colloidal solution depends on the wavelength of light scattered by the dispersed particles.
In the light of the above statements, choose the most appropriate answer from the options given below.
The equation of a common tangent to the parabolas \(y=x^{2}\) and \(y=-(x-2)^{2}\) is
The maximum and minimum voltage of an amplitude modulated signal are \(60 \mathrm{~V}\) and \(20 \mathrm{~V}\) respectively. The percentage modulation index will be :
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: \(\mathrm{LiF}\) is sparingly soluble in water.
Reason R: The ionic radius of \(\mathrm{Li}^{+}\) ion is smallest among its group members, hence has least hydration enthalpy.
In the light of the above statements, choose the most appropriate answer from the options given below.
The acute angle between the pair of tangents drawn to the ellipse \(2 x^{2}+3 y^{2}=5\) from the point \((1,3)\) is :