List of top Physics Questions asked in KEAM

With Laplace correction in Newton’s formula for the velocity of sound in gases, the velocity of sound in monoatomic gas at STP is

The force required to increase the length of a thin copper wire of cross-sectional area \(0.1\ \text{cm}^2\) by \(0.1\%\) is (Young’s modulus of copper is \(11 \times 10^{10}\ \text{N m}^{-2}\))

The ratio of the weights of an object of mass $m$ at a height $R$ and $2R$ from the surface of earth is ($R$ is the radius of earth)

Lakes and ponds freeze at the top surface with water below. This phenomenon is due to

If the magnitude of gravitational potential energy of an object of mass $200$ kg at a height of $3.6 \times 10^6$ m from the earth surface is $6 \times 10^6$ J then its value at a height of $5.6 \times 10^6$ m is (Radius of earth is $6.4 \times 10^6$ m)

If the temperature of $2$ moles of krypton gas is increased from $-11^\circ$C to $89^\circ$C at constant volume, then (specific heat at constant volume of krypton is $C_V$)

If a huge tank has a small side hole at a depth of $2$ m from the surface of water, then the velocity of water flowing through the hole is ($g = 10\ \text{m s}^{-2}$)

A swimmer jumps from a height is able to increase the number of loops made in air by

A body initially at rest breaks up into two pieces of masses $M$ and $3M$ and move with a total kinetic energy of $E$, then the kinetic energy of the piece of mass $M$ is

If a proton, a deuteron and an $\alpha$-particle have the same speed, then the kinetic energy is

The moment of inertia of a system of two masses $2$ kg and $4$ kg lying in the x-y plane at distances, $2$ m and $4$ m, respectively from the origin about the z-axis is (in $\text{kg m}^2$)

If \(10\) identical silver coins each of mass \(m\) are placed one over the other, then force on the \(6^{\text{th}}\) coin from the bottom is

If the maximum acceleration of a moving platform to keep a box of mass \(5\) kg on it without sliding is \(3\ \text{m s}^{-2}\), then the static friction between the box and floor of the platform is (\(g = 10\ \text{m s}^{-2}\))

If the position vector of a particle is \(\vec{r} = 2t\hat{i} + \sqrt{3}t^2\hat{j} + 5\hat{k}\) with \(\vec{r}\) in m and \(t\) in s, then at \(t = 1\) s the angle made by the velocity vector with x-axis is

If the angular speed of a particle moving in a circular path of radius \(1.2\) m is increased from \(2\ \text{rad s}^{-1}\) to \(4\ \text{rad s}^{-1}\) keeping its radius constant, then its linear speed is increased by

A body starts moving from the origin along a straight line at a speed of \(20\ \text{km h}^{-1}\) for \(1\) hour. Then it turns perpendicular to its path and moves with the same velocity for \(30\) minutes. Then the magnitude of its displacement is

A physical quantity that has the same dimensions as those of Boltzmann constant is

Taking into consideration of significant figures, in the conversion relation \(2.0\ \text{m s}^{-2} = X\ \text{km h}^{-2}\), the value of \(X\) is

The INCORRECT statement is

Identify the two electromagnetic waves A and B having respective wavelengths 2 cm and 580 nm

The optical elements are matched with their optical phenomenon. The FALSE match is

If a thin lens of focal length 20 cm is in contact with another lens of power 4 D, then the effective power of the combination is

Nucleons in nucleus are bound by

In a transformer circuit it is possible to

As temperature increases, at Curie temperature