List of top Physics Questions asked in KEAM

Radius of gyration of a uniform circular disc of radius \(R\) about its diameter is
In a perfectly inelastic head on collision
Power of an engine driving a vehicle of mass \(m\) with a speed \(v\) on a horizontal road is (\(\mu\) is the coefficient of friction between the road and the tyre)
A rotating fly wheel with an initial angular speed of \( 4 \, \text{rad s}^{-1} \) has an angular acceleration of \( 2 \, \text{rad s}^{-2} \). The angle (in radian) it will turn in a time of \( 4 \, s \) from the start is
A garden roller of weight \( 100\,kg \) is pulled with a force of \( 300\,N \) acting at an angle of \( 30^\circ \) with the ground. The effective pulling weight of the roller (in kg wt) is \((g=10\,m/s^2)\)
A body of mass \(2\) kg is moving with a velocity of \(10\,\text{m s}^{-1}\). If a force of \(50\) N is applied on it for \(10\) s along its motion, the velocity of the body (in \(\text{m s}^{-1}\)) is
When a body starts from rest and moves with uniform acceleration, then its instantaneous displacement \( s \) is related to time \( t \) as
A particle moving in a circular path, covers equal distances in equal intervals of time. Then the quantity associated with the particle that remains constant with time is
The dimensions of ratio of energy to Planck's constant are those of
A p-n junction diode without any voltage biasing acts as:
The possible number of energy states in a Ge crystal containing $5\times10^{3}$ atoms is:
Light energy is redistributed in:
In the hydrogen spectrum, the shortest wavelength of the Brackett series is produced during the transition:
A radioactive element with $6\times10^{5}$ atoms initially is left with $0.75\times10^{5}$ undecayed atoms in $48$ years. The half-life is:
Chromatic aberration arises in thick lenses due to:
An electromagnetic wave travelling in vacuum has its electric field component, $E=15\sin(1.57y+5.4t)\hat{j}$. The wavelength of the wave is:
An unpolarized light incident on a plane glass surface gets totally polarized on reflection. If the refractive index of glass is $\tan 57^{\circ}$, then the angle of refraction is:
If the time period of a particle executing SHM is 8 s, then the time period of the potential energy of this particle is
If the speed of the transverse wave in a wire under certain tension T is v, then its speed under tension $2T$ (in $ms^{-1}$) is
A musician hits a drum 90 times in a minute. The time period of hit is
Which one of the following pairs of charges separated by the same distance r will experience a maximum force?
The principle behind the function of Bunsen burner is
If the mean free path of a gas molecule at $27^{\circ}\text{C}$ is $10\times10^{-7}\ \text{m}$, its mean free path at $87^{\circ}\text{C}$ is:
Which one is INCORRECT statement?
Bernoulli's principle is applicable to