List of top Physics Questions asked in KEAM

If an ideal engine needs to transmit a torque of 200 Nm to maintain a rotor at a uniform angular speed of 300 rads\(^{-1}\), then the power required for the engine is:
If an ideal gas, in an insulated vessel, is allowed to expand into another similar evacuated vessel through a valve then:
The total energy of a gas mixture of one mole of oxygen and 3 moles of argon at a temperature \( T \) by neglecting vibrational modes is:
Two spheres A and B having respective charges 6 C and 12 C placed at a distance \( d \) repel each other by a force \( F \). The charge given to sphere A to reverse the force as \( -F \) is:
The de Broglie wavelength associated with the electrons accelerated by a potential of 81 V is lying in the region of electromagnetic waves:
The dimensional formula of the gravitational constant is \( M^a L^b T^c \), the values of \( a \), \( b \), and \( c \) are respectively:
In an Young double slit experiment without varying the distance of the screen and the slit separation, if the wavelength of monochromatic source is changed one by one in the ratio 2:3:4, then the corresponding fringe widths measured will be in the ratio:
If a charged particle enters a uniform magnetic field \( B \), with a velocity \( v \) such that \( v \) has a component along \( B \), then the charged particle describes:
If a ray of light passes through a medium, its frequency and wavelength are \( 4 \times 10^{14} \) Hz and 450 nm respectively. Then the refractive index of the medium is:
The ratio between the magnetic dipole moment of a revolving electron in a circular orbit to its angular momentum is (where \( e \) is the charge and \( m \) is the mass of the electron):
The ratio of the respective rms velocities of the gas molecules of an ideal gas at 327°C and at 627°C is:
The equipotential surface is:
If a body is taken above the surface of the Earth, it loses its weight by 20% at a height of \( h = \frac{\sqrt{5}}{2} R \), where \( R \) is the radius of the Earth, then:
A man fires bullets at two hillocks, one shorter and the other taller. The taller one is behind the smaller one. If the first echo is heard after 6 s and the second echo after 12 s, then the distance between the hillocks is (velocity of sound in air = 330 m/s):
If a body at rest undergoes one dimensional motion with constant acceleration, then the power delivered to it at a time \( t \) is proportional to:
The collision in which the two colliding particles move together after collision is called:
Plutonium nucleus undergoes fission with:
The mutual inductance between a pair of coils A and B placed close to each other depends upon:
If a freely falling body covers 80 m in the first 4 seconds, then in the next 4 seconds it covers a distance of:
The electromagnetic waves used in LASIK and cell phones are respectively:
The work done by a source in taking unit charge from lower to higher potential energy is called the source's:
Which one of the following phenomena does not occur when a white light falls on an equilateral glass prism?
Find the TRUE statement of the algebraic operations of scalar and vector quantities.
Two gases under the same thermal conditions have the same number of molecules per unit volume. If the respective molecular diameters of the gases are in the ratio 1 : 3, then their respective mean free paths are in the ratio:
The analogy between linear motion and rotational motion are given. The FALSE one is: