List of top Physics Questions asked in KEAM

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

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 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

The false statement is

If the kinetic energy of a moving body reduces to \(49\%\), then its velocity is reduced to

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 \(f_{s}\) 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 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

With usual notations for a rigid body in rotational motion about a fixed axis, its

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 dimensional formula for the product of moment of inertia and the square of angular velocity 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 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

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

In a full wave rectifier, for an input ac voltage

In a hydrogen atom, the transition of an electron from the energy level, \(n_2 = \infty\) and \(n_1 = 3\) is the

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

Semiconductors are

The ratio of the speed of light in vacuum to that in a medium is called

The distance of an object placed in front of a concave mirror of radius of curvature 24 cm that gives its magnification as 3 is

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 diamagnetic and paramagnetic materials at 300 K are respectively,

The velocity of light in a medium of relative permittivity 2 and relative permeability 4.5 is (velocity of light in free space is c)

If an electric bulb of resistance \(400 \Omega\) is connected to an ac source of peak voltage 282.8 V, then the electric power of the bulb is

If a rectangular loop carrying a current I and area ab is placed such that a uniform magnetic field B is in the plane of the loop, then the magnitude of torque on it is