(A) n
(B) m
(C) s
(D) l
A hydrogen atom is in its ground state when its orbital electron?
(A) Is within the nucleous
(B) Escape from it
(C) Is in its lowest energy level
(D) Is stationary
The total energy of an atomic electron is?
(A) Zero
(B) Less than zero
(C) More than zero
(D) All of the above
When a beam of light is used to determine the position of an object, the greatest accuracy is obtained if the light?
(A) Is polarized
(B) Have shorter wavelength
(C) Have long wavelength
(D) Has a low intensity
Relative to the original photon, the photons that emerges from a collision with an electron has?
(A) Longer wavelength
(B) More momentum
(C) More energy
(D) Higher frequency
Modern physical theories indicates that?
(A) All particles exhibits wave behaviour
(B) Only moving particles exhibits wave behaviour
(C) Only charged particles have wave behaviour
(D) Only uncharged particles have wave behaviour
An observer moves past a stationary electron on the earth surface. His instrument measures?
(A) Only magnetic field
(B) Only electric field
(C) Both magnetic and electric field
(D) Neither electric nor magnetic field
A crucial experiment that led to the theory of relativity was performed by the?
(A) Albert Einstein
(B) Samuel Ether
(C) Pavel Cerenkov
(D) Michelson and Morley