List of top Physics Questions asked in KEAM

If the value of \(C_p/C_v\) is unity in the equation \(PV^\gamma = \text{constant}\), then the process is
A particle executes linear simple harmonic motion and its potential energy (P.E.), kinetic energy (K.E.), total energy (T.E.) are measured as functions of displacement \(x\) from the mean position at the origin. Then
The temperature at which the r.m.s. velocity of oxygen molecule is equal to that of hydrogen molecule at 20 K is
A point charge \(-q\) is placed at a distance \(x\) from an isolated conducting plane. The electric field at any point \(P\) on the other side of the plane is directed
The ratio of radius of gyration of a circular ring to that of a circular disc, each of same mass and same radius about their respective central axes is
A shell travelling along a parabolic path in the gravitational field of the earth undergoes explosion in mid air. The centre of mass of the fragments will move
Pick out the INCORRECT statement from the following
Two bodies of masses \(m\) and \(4m\) are kept at a distance of \(x\). The distance on the axial point from \(m\) at which the gravitational field is zero is
The total pressure \(P\) inside an air bubble of radius \(r\) at a depth \(h\) below the surface of liquid of density \(\rho\) is (T = surface tension of liquid, \(P_0\) = atmospheric pressure)
Work done in a stretched wire is
An object when dropped from a height \(h\) from the ground, reaches the ground in \(t\) s. The time after which the object was passing through a point at a height \(h/2\) from the ground is
A person standing on the platform of a lift will experience weight loss, when the lift moves
Three forces \(F_1, F_2\) and \(F_3\) acting on a body of mass \(m\) keep the body stationary. If the forces \(F_1\) and \(F_2\) are mutually perpendicular, the acceleration of the body when the force \(F_3\) is removed is
A body initially at rest undergoes linear motion with constant acceleration under the action of a constant force. Then the power delivered to the body at time \(t\) is proportional to
The angle between two unit vectors \(\vec{A}\) and \(\vec{B}\) is \(60^\circ\). The value of \(|\vec{A} - \vec{B}|\) is
In a semiconductor crystal, the total number of electrons in the outer shell is 4N . At absolute zero, the number of energy states of valence and conduction band are respectively
Which one of the following principles helps to explain the flow of blood in an artery?
The eye defect astigmatism can be corrected by using a
An astronaut experiences weightlessness in space satellite because
In dielectrics, polarization is the dipole moment per unit
For the oscillations of a spring with spring constant k, the false statement is
Three particles of equal mass lie at distances of 1 cm, 2 cm, and 3 cm from the origin. The distance of their center of mass from the origin is
Energy equivalent of mass 0.5 kg is
The force acting on the particle of 0.2 kg mass whose displacement is described by the equation \( x = 3t + 7t^2 \, \text{m} \)
In the nuclear process, 1122Na → 1022Ne + e+ + νe, then X is