In Davisson-Germer experiment the diffracted proton from crystal shows______________?
A. Particle property B. Wave property C. Light property D. Quantum property
Physics MCQs with Answers
If a diffraction grating is placed in the path of a light beam it reveals______________?
A. Wave property B. Particle property C. Energy particle D. Electromagnetic wave property
In an electron microscope, we use energetic particles because of______________?
A. Penetrating power is high B. Kinetic energy is large C. Wavelength is very short D. All the above reasons
In the electron microscope, electric & magnetic fields are used as_______________?
A. Electromagnetic gun B. Source of electromagnetic waves C. Deflecting charged particle D. Converging source of electrons
A three-dimensional image is obtained by________________?
A. Electron microscope B. Scanning electron microscope C. Magnetic imaging D. None of the above
The uncertainty in momentum & position is due to its_____________?
A. Property of matter and radiation B. Two-dimensional motion C. Emission of the certain wavelength D. Very high velocity
For confinement of electron in a box of radius 10-14m the electron, speed should be_____________?
A. 107m/sec B. Should be greater than the speed of light. C. Be zero D. Not be wave-like
The energy radiated is directly proportional to the fourth power of Kelvins temperature is________________?
A. Karl-Weins law B. Rayleigh-Jeans law C. Stephens law D. Plancks
Compton effect proves the________________?
A. Photon theory of light B. Dual nature of light C. Wave nature of light D. Uncertain nature of light
Electron moves in the orbit as________________?
A. Simple vibratory motion B. Standing wave motion C. Vibratory motion like up and down D. S.H.M likes the sound