VITEEE - Physics Mock Tests

An ideal gas is taken through a cyclic process ABCA. The net work done by the gas in one cycle is:

A battery of emf 12 V and internal resistance 2 Ω is connected to a load resistance of 4 Ω. The power delivered to the load is:

Two balls of masses 2 kg and 1 kg are moving with velocities 10 m/s and 5 m/s in the same direction. After an elastic collision, the velocity of the 2 kg ball is approximately:

Two identical balls approach each other with speeds 3u and u respectively and collide elastically. After the collision, the speed of the ball that was initially moving at 3u is:

Light of wavelength 400 nm is incident on a metal surface with work function phi = 2.0 eV. The stopping potential for the photoelectrons is (hc = 1240 eV*nm, e = 1.6 x 10^-19 C):

Root mean square speed of gas molecules is proportional to:

A wire of resistance R is stretched to double its length. Its new resistance will be:

A spherical conductor of radius R has a charge Q on it. Another identical uncharged spherical conductor is brought into contact with it. After separation, the ratio of surface charge densities (ρ₁ : ρ₂) of the two conductors is: