Physics Test - ...

Light of wavelength 4000 Å is incident on a metal plate whose function is 2eV. The maximum kinetic energy of emitted photoelectron will be:

The process of electroplating, using the phenomenon of electrolysis, is primarily based on:

What will be the output of the combination of AND gate and NOT gate if the inputs are A and B?

A particle of mass m carrying charge \(+q_{1}\) is revolving around a fixed charge \(-q_{2}\) in a circular path of radius r. Calculate the period of revolution.

The nearest star to our solar system is 4.29 light-years away. How much is this distance in terms of parsec? How much parallax would this star (named Alpha Centauri) show when viewed from two locations of the Earth six months apart in its orbit around the Sun?

What is the maximum height attained by an object that is projected from the surface of the earth with a velocity that is one-third of the escape velocity? (Radius of the Earth=R)

A converging lens is required to be formed of 10 cm focal length using two lenses. One of the lens is diverging lens with focal length - 20 cm. Find the power of another lens.

If two bulbs, one of 200 W and the other of 100 W are connected in series with a 100 V battery, then which bulb will have more brightness:

Two planets orbit the Sun in circular orbits, with their radius of orbit as \(\mathrm{R}_{1}=\mathbf{R}\) and \(\mathrm{R}_{2}=4 R\). Ratio of their periods \(\left(\frac{T_{1} }{ T_{2}}\right)\) around the Sun will be:

Which one of the following is the correct expression for displacement current \(\left(i_{d}\right)\)?