MCQS of Physics for NTS
At 0° K which of the following properties of a gas will be zero?
Vibrational enegy
Potential energy
Density
Kinetic energy
The velocity v of a particle at time t is given by: v = at + b / t + c The dimensional formula of a,b and c care respectively:
L;LT and T
L2 ; T and LT2
L;LT and
LT2 ; LT and L
In a simple harmonic motion the kinetic energy (KE) and the potential energy (PE), are such that throughout the motion
KE + PE remains constant
KE/PE is constant
PE remains constant
KE remains constant
Two point charges placed at distance of 20 cm in air repel each other with a certain force.When a dielectric slab of thickness 8 cm and dielectric constant K is introduced between these point charges force of interaction becomes half of its previous value Then K is approximately.
2
4
?2
1
Steel is preferred for making springs over copper.Whey?
Steel is cheaper
Young’s modulus of copper is more than that of steel
Young’s modulus of steel is more than that of copper
Steel is less likely to be oxidized
Which of the following is a scalar quantity
Torque
Displacement
Weight
Density
In a voltmeter the conduction takes place due to
Electrons and holes
Electrons and ions
Electrons only
Holes only
The initial velocity of a body moving along a straight line in 7 m/s. It has a uniform acceleration of 4 m/s2. The distance covered by the body in the 5th second of its motion is
35 m
50 m
85 m
25 m
Huygen’s wave theory of light cannot explain
Photoelectric effect
Diffraction
Interference
Polarization
In LCR series AC circuit the phase angle between current and voltage is
?/2
Any angle between 0 and ±?/2
?
Any angle between 0 and ?/2
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