Quiz on Quantum Mechanics

Q.1 Which of the following phenomena cannot be explained by the classical theory?

Photoelectric effect
Compton effect
Raman effect
All of these

Q.2 Which of the following phenomena show the particle nature of light?

Photoelectric effect
Raman effect
Compton effect
All of these

Q.3 The deBroglie hypothesis is concerned with

wave nature of radiations
wave nature of all material particles
wave nature of electrons only
wave nature of a-particles only

Q.4 Quantum theory successfully explains the phenomena of

photoelectric and compton effects
interference, diffraction and polarisation
black body radiations
all of these

Q.5 Electron behaves like a wave as it

can be deflected by an electric field
can be deflected by a magnetic field
they ionise a gas
can be diffracted by a crystal

Q.6 Rayleigh–Jeans law is deduced from the Planck’s radiation formula under the condition of

large wavelength and high temperature
small wavelength and low temperature
small wavelength and high temperature
large wavelength and low temperature

Q.7 Dual character of matter was proposed by

Davisson and Germer
deBroglie
Planck
none of these

Q.8 Matter waves

show diffraction
show interference
polarisation
none of these