List of top Physics Questions asked in KEAM

The drift velocity of electrons in a linear conductor of given length under a potential can be doubled by
If the potential difference between two points separated by a distance in a uniform electric field of 800 \(NC^{-1}\) is 16 V, then the distance of separation (in cm) is.
When an electric potential of 200 V is maintained between the ends of a conductor, a current of 3 A flows through it. The amount of heat energy dissipated in the time interval 25 s is
An organ pipe open at both the ends has its fundamental frequency 200 Hz. If one end of it is closed and the other end is kept open, the frequencies produced by it are
When filled with a dielectric, the capacitance C of a capacitor changes by 2C. Then the dielectric constant of the dielectric is
If the diatomic molecule is non-rigid, then its molar specific heat capacity at constant volume is
Which one is INCORRECT?
The displacement and acceleration of a particle oscillating simple harmonically are respectively 3.0 m and \(48.0 \, ms^{-2}\). The angular frequency of the particle is (in \(s^{-1}\)).
Two different syringes having radii in the ratio 1: 5 are applied with same pressure. The forces acting on these syringes are in the ratio
When two perpendicular forces 3 N and 4 N act on a body at rest, it is accelerated to \(2 \, ms^{-2}\). The mass of the body is.
In a steam engine, the flywheel is used to resist
When the total external force acting on a moving system is zero, the velocity of the center of mass
A spring of spring constant k is cut into n pieces of equal length. The force constant of any one of the pieces is
A ball falling from a height of 20 m hits a floor and bounces back to a height of 17 m. The percentage of energy lost by the ball during the impact is
When a satellite moves from the farthest stable orbit to the nearest stable orbit towards the earth, its gravitational potential energy
The displacement of a particle moving along x-axis is given as $(x=\frac{3}{4}t^{2}-12t+3)m$. The particle will come to rest in
The linear speed of a stone revolving 5 times in a circle of 4 cm radius in 2 minute is (in $cm s^{-1}$)
The value of the measurement \(14.0 \times 10^{-5} + 8.3 \times 10^{-3}\) with respect to significant figures is.
If the magnitude of the vector \(\vec{P} = x\hat{i} + 0.8\hat{j} + 0.6\hat{k}\) is 2, then the value of x is.

If the air-core medium is replaced by a dielectric of dielectric constant \(k\) in an air-core parallel plate capacitor of capacitance \(C\), its new capacitance becomes

A wire of length 0.5 m carrying current 4 A is placed perpendicular to a magnetic field of 0.2 T. The force exerted on the wire is

An AC circuit with \(R=2\pi^2\,\Omega\) and \(L=0.02\pi\) H powered with an a.c. source of frequency 50 Hz has an impedance of

Carnot engine operates between temperatures, 600 K and 300 K. If it absorbs 1200 J of heat from source, the work done by the engine is

Hydrostatic pressure at a depth of a liquid in a container depends on

The terminal velocity of a small steel ball of radius \(r\) falling in a fluid is proportional to