In Davisson-Germer experiment the diffracted proton from crystal shows______________? April 17, 2025 by admin A. Particle property B. Wave property C. Light property D. Quantum property
If a diffraction grating is placed in the path of a light beam it reveals______________? April 17, 2025 by admin A. Wave property B. Particle property C. Energy particle D. Electromagnetic wave property
In an electron microscope, we use energetic particles because of______________? April 17, 2025 by admin 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_______________? April 17, 2025 by admin A. Electromagnetic gun B. Source of electromagnetic waves C. Deflecting charged particle D. Converging source of electrons
A three-dimensional image is obtained by________________? April 17, 2025 by admin A. Electron microscope B. Scanning electron microscope C. Magnetic imaging D. None of the above
The uncertainty in momentum & position is due to its_____________? April 17, 2025 by admin 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_____________? April 17, 2025 by admin 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________________? April 17, 2025 by admin A. Karl-Weins law B. Rayleigh-Jeans law C. Stephens law D. Plancks
Compton effect proves the________________? April 17, 2025 by admin 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________________? April 17, 2025 by admin A. Simple vibratory motion B. Standing wave motion C. Vibratory motion like up and down D. S.H.M likes the sound
