.8 The kinetic energy K.E. with which the electron strikes the target is given by:
A) K.E. = e2V C) K.E. = hf2
B) K.E. = hc/λ D) K.E. = eV
Q.9 X-rays can be produced by bombardment of ____________ on target metal:
A) Protons C) Neutrons
B) Electrons D) Alpha particles
A) K.E. = e2V C) K.E. = hf2
B) K.E. = hc/λ D) K.E. = eV
Q.9 X-rays can be produced by bombardment of ____________ on target metal:
A) Protons C) Neutrons
B) Electrons D) Alpha particles
Q.10 LASER is an acronym for:
A) Light amplification by stimulated emission of radiation
B) Light annihilation by stimulated emission of radiation
C) Light amplitude of stimulated emission of radiation
D) Light amplification by stimulated emission of radio
Q.11 Laser light is monochromatic which means
A) It consists of one ray of light C) It consists of carbon monoxide gas
B) It consists of one wavelength D) It consists of photons having 1 eV energy
Q.12 If an electron in the ‘K’ shell is removed and an electron from ‘L’ shell jumps to occupy the holeA) Light amplification by stimulated emission of radiation
B) Light annihilation by stimulated emission of radiation
C) Light amplitude of stimulated emission of radiation
D) Light amplification by stimulated emission of radio
Q.11 Laser light is monochromatic which means
A) It consists of one ray of light C) It consists of carbon monoxide gas
B) It consists of one wavelength D) It consists of photons having 1 eV energy
in the ‘K’ shell, it emits a photon of energy:
A) hfKα = EL – EK C) h/λKα = EL – EK
B) hc = EL – E K D) hfKα = EK – EL