Category: Modern Physics

A. Penetrating power is high
B. Kinetic energy is large
C. Wavelength is very short
D. All the above reasons

A. Electromagnetic gun
B. Source of electromagnetic waves
C. Deflecting charged particle
D. Converging source of electrons

A. v = 3 ×× 106 ms-1
B. v = 2 ×× 10 ms-1
C. v = 2 ×× 6 ms-1
D. v = 2 ×× 106 ms-1

A. Ec2
B. E/c2
C. E/c
D. c2/E

A. Karl-Weins law
B. Rayleigh-Jeans law
C. Stephens law
D. Plancks

A. zero
B. hv/c2
C. hv/c
D. c2/hv

A. Particle property
B. Wave property
C. Light property
D. Quantum property

A. 1/2 mvmax2=hf+Φ
B. 1/2 mvmax2-hf = Φ
C. 1/2 mvmax2=hf-Φ
D. All of above are correct

A. 5.53 x 10-36kg
B. 0 kg.
C. 2.46 x 10-36kg
D. 1.84 x 10-44kg

A. a frame of reference which is either at rest or moves with a constant velocity is called an inertial frame of reference
B. an un-accelerated frame of reference is called an inertial frame of reference
C. all the frames of reference in uniform rectilinear motion are equivalent
D. Newtons laws of motion are valid in an accelerated (non inertial) frame of reference