AP EAPCET 2021 19TH AUGUST EVENING SHIFT

A motor cyclist wants to drive in horizontal circles on the vertical inner surface of a large cylindrical wooden well of radius \(8.0 \mathrm{~m}\), with minimum speed of \(5 \sqrt{5} \mathrm{~ms}^{-1}\). The minimum value of coefficient of friction between the tyres and the wall of the well must be \(\left(g=10 \mathrm{~ms}^{-2}\right)\)

P speaks truth in 70% of the cases and Q in 80% of the cases. In what percent of cases are they likely to agree in stating the same fact

If 0.2 moles of sulphuric acid is poured into 250 mL of water, calculate the concentration of the solution.

The speed of ripples \((v)\) on water surface depends on surface tension \((\sigma)\), density \((\rho)\) and wavelength \((\lambda)\). Then, the square of speed \((v)\) is proportional to

If \(\alpha\) and \(\beta\) are the roots of \(11 x^2+12 x-13=0\), then \(\frac{1}{\alpha^2}+\frac{1}{\beta^2}\) is equal to (approximately close to)

Assuming that the incident radiation is capable of ejecting photoelectrons from all the given metals, the lowest kinetic energy of the ejected photoelectron is observed with which of the given metals?