List of top Physics Questions asked in KEAM

The product of the pressure P and volume V of an ideal gas in a container is related to the translational part of the internal energy, E as
The amount of heat to be withdrawn from 3 kg of water at \(0^{\circ}C\) to obtain 3 kg of ice at \(0^{\circ}C\) in an icemaker is (latent heat of fusion of ice is \(80 \text{ kcal/kg}\))
If the moment of inertia of a solid sphere of mass M and radius R about its diameter is I, then that of another sphere of mass 2M and radius 2R about its diameter is
If a black body at a temperature T radiates the maximum energy at a wavelength \(\lambda_{m}\), then to radiate the maximum energy at the wavelength \(\frac{\lambda_{m}}{3}\), its temperature should be
Four identical point masses are placed at the corners of a square ABCD and the centre of mass lies at the centre O of the square. If the mass at B is removed, then the centre of mass lies at the point
If the ultimate strength and fracture points are far apart in a stress - strain curve of a material, then the material is said to be
Heat is conducted through a uniform rod ABC of length 1 m keeping the end A at \(100^{\circ}C\). If the temperature at the point B at a distance 0.4 m from the end A is \(80^{\circ}C\) and that at the other end C is \(40^{\circ}C\), then the ratio of heat conducted through AB to that through BC is
If a satellite of mass M is spinning about its own axis and revolves around the earth in a circular orbit, then it does not have
With usual notations for a rigid body in rotational motion about a fixed axis, its
If the kinetic energy of a moving body reduces to \(49\%\), then its velocity is reduced to
The ratio between the gravitational potential energies of 1 kg of mass on the surface of two planets having masses and radii in the ratio \(1 : 2\) and \(1 : 3\) respectively, is
If \(f_{s}\) and \(f_{k}\) represent the coefficients of static friction and kinetic friction of the relative motion between two surfaces in contact with area A, then
The false statement is
If a ball of mass 0.02 kg bowled by a bowler straight to a batsman is hit back with the same speed with an impulse of 2 Ns, then the speed of the ball bowled is
If \(\theta\) is the angle of projection of an object for which the horizontal range is equal to the maximum height attained, then the value of \(\tan \theta\) is
If a freely falling body from the top of a tower takes 3 s and 5 s to cross the \(28^{th}\) floor and \(4^{th}\) floor respectively, then the height difference between these floors is \((g = 10 \, \text{ms}^{-2})\)
The dimensional formula for the product of moment of inertia and the square of angular velocity is
The ratio of the distance of the sun from the earth to that of the moon from the earth is of the order of
The velocity of a swimmer in the direction of flow of river is \(10 \, \text{kmh}^{-1}\) and that against the flow of river is \(6 \, \text{kmh}^{-1}\). The velocity of the swimmer in still water in \(\text{kmh}^{-1}\) is
In a full wave rectifier, for an input ac voltage
If N is the initial number of atoms in a radioactive sample, then the number of atoms decayed after the five half life periods is
In a hydrogen atom, the transition of an electron from the energy level, \(n_2 = \infty\) and \(n_1 = 3\) is the
Semiconductors are
In Young's double slit experiment using a source of wavelength \(\lambda\) interference bands are observed on a screen. If the separation between the slits alone is halved in this experiment, then the angular separation \(\omega\) of the fringes on the screen becomes
The ratio of the speed of light in vacuum to that in a medium is called