a) Which of the following statement is NOT true? a) The Michelson-Morley experim
ID: 1533057 • Letter: A
Question
a) Which of the following statement is NOT true?
a) The Michelson-Morley experiment showed the speed of light is a constant in all inertia
reference frames.
b) The invariant mass is conserved in a particle scattering experiment.
c) Classical theory failed to explain the short wavelength limit of the blackbody radiation
spectrum.
d) Planck's law is based on a hypothesis that the energy of a mechanical oscillator is quan-
tized to nhf, where n is an integer.
e) The Compton experiment demonstrated the particle nature of photons.
b) Which of the following statement about the photoelectric e ect is NOT true?
a) The energy of the incident light is quantized into photons.
b) Each photon carries energy hf.
c) An electron gains energy hf by absorbing a photon.
d) The stopping voltage depends on the frequency and intensity of the incident light.
e) The work function is a characteristic of the metal.
Explanation / Answer
a) The Michelson-Morley experiment showed the speed of light is a constant in all inertia
reference frames.
True
b) The invariant mass is conserved in a particle scattering experiment.
True
c) Classical theory failed to explain the short wavelength limit of the blackbody radiation
spectrum.
True
d) Planck's law is based on a hypothesis that the energy of a mechanical oscillator is quan-
tized to nhf, where n is an integer.
False , Planks hypotheis is the electromagnet energy emiting from an atom is quantised
e) The Compton experiment demonstrated the particle nature of photons.
True.
b) Which of the following statement about the photoelectric e ect is NOT true?
a) The energy of the incident light is quantized into photons. True
b) Each photon carries energy hf. True
c) An electron gains energy hf by absorbing a photon. TRUE
d) The stopping voltage depends on the frequency and intensity of the incident light. NOT TRUE , Stoping potential does not depend on intensity of light.
e) The work function is a characteristic of the metal. True
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