Search
.Management Sciences
Category: Modern Physics
A transmitting station emits radio waves of wavelength λ at power P. If h is Planck’s constant & c the speed of light what is the rate of emission of photons ?
A. λ
B. Speed of sound
C. Speed of lightB.
D. h
The existence of Ether wind was experimentally rejected by__________________?
A. equal to its rest mass
B. double of its rest mass
C. infinite
D. zero
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
Which one of the following radiations has the strongest photon?
A. T.V waves
B. Microwaves
C. X-rays
D. γ-rays
As the temperature of black body is raised the wavelength corresponding to maximum intensity________________?
A. shifts towards longer wavelength
B. shifts towards shorter wavelength
C. remain the same
D. shifts towards longer as well as shorter wavelengths
If the wavelength of incident radiation is increased in photoemission then_________________?
A. The maximum kinetic energy of the photoelectrons increases
B. The minimum kinetic energy of the photoelectrons decreases
C. The minimum kinetic energy of the photoelectrons increases
D. The average kinetic energy of the photoelectrons decreases
The linear momentum of an X-ray photon of wavelength 0.1A is_______________?
A. 6.625x1023N-s
B. 66.25x1023N-s
C. 662.5x1023N-s
D. data is insufficient
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
Davison Germer experiment indicates__________________?
A. Interference
B. Polarization
C. Electron diffraction
D. Refraction
After traveling through a vacuum a photon of light entering into some transparent denser medium. Thus the energy of light______________?
A. Increases because wavelength decreases
B. Decreases because speed decreases
C. Remains same
D. Increases then decrease
Recent Comments