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Worksheetsphoto electric effect Quiz
Total questions: 10
Worksheet time: 5mins
The maximum kinetic energy of the photoelectrons is ….......... proportional to the frequency of incident radiation.
inversely
directly
first directly and then inversely
none of these
The energy spent in releasing the photoelectrons from a metal surface is called ……………
kinetic energy
potential energy
work function
excitation energy
Photoelectric current is ………. proportional to the number of photoelectrons emitted per second.
inversely
directly
first directly and then inversely
none of these
Hallwachs experiment set-up is used to study:
Tyndal effect
Diffraction of light
Photo electric effect
Raman effect
Photoelectric effect phenomenon was discovered by:
Newton
Maxwell
Hertz
Huygens
Photoelectric effect phenomenon was discovered by:
Newton
Maxwell
Hertz
Huygens
The stopping voltage in photoelectric effet depends
only on the frequency of incident photon
only on the intensity of the incident light
only on the nature of the surface of metal
on the frequency of incident light and the nature of the metal
The speed of the fastest photoelectron emitted from a surface of threshold wavelength 600 nm, when the surface is
irradiated by light of wavelength 400 nm is
9.3 x 105 m s-1
2 x 106 m s-1
2 x 107 m s-1
6 x 105 m s-1
Two metals A and B have work functions of 2 eV and 5 V respectively. When light of wavelength 400 nm is incident,
electrons are emitted from
A
B
Both A and B
Neither A nor B
The dimensional formula for Plancks constant is
ML2T−1
ML2T−2
MLT−2
ML−2T1
