Category: Modern Physics

A. Photon theory of light
B. Dual nature of light
C. Wave nature of light
D. Uncertain nature of light

A. Wave property
B. Particle property
C. Energy particle
D. Electromagnetic wave property

A. Becomes double
B. Remains same
C. Becomes half
D. First increases then decrease because of the curvilinear graph

A. the threshold frequency for the metal surface
B. the intensity of incident light
C. the frequency of incident light and work function of the metal surface
D. all of the above

A. Electron microscope
B. Scanning electron microscope
C. Magnetic imaging
D. None of the above

A. Ampere
B. Plank
C. Thomson
D. Einstein

A. the flight path of a vertically falling body appears straight to the stationary observer
B. the flight path of vertically falling body appears parabolic to an observer in uniform relative motion
C. all states of rest and motion are relative and there is no such thing as absolute motion
D. all the above

A. 2.50 GWh
B. 25.00 GWh
C. 0.26 GWh
D. 250 GWh

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