Einstein's Photoelectric Equation(Particle Nature of Light) NEET Questions

Physics - Dual Nature of Matter and Radiation

Einstein's Photoelectric Equation(Particle Nature of Light) MCQ Questions


1.
Which equation represents Einstein’s photoelectric equation?
A.
K = hf - ϕ
B.
hf = ϕ + K
C.
ϕ = hf - K
D.
K + ϕ = hf
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ANSWER :
A. K = hf - ϕ
2.
In Einstein’s photoelectric equation, the term 'ϕ' represents:
A.
Energy of incident light
B.
Threshold frequency
C.
Energy required to release an electron
D.
The charge of an electron
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ANSWER :
B. Threshold frequency
3.
According to Einstein’s photoelectric equation, the kinetic energy of emitted electrons depends on:
A.
The work function of the metal
B.
The intensity of incident light
C.
The frequency of incident light
D.
The type of metal
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ANSWER :
C. The frequency of incident light
4.
The stopping potential in a photoelectric experiment is used to measure:
A.
The maximum kinetic energy of electrons
B.
The energy of incident photons
C.
The threshold frequency
D.
The stopping potential
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ANSWER :
D. The stopping potential
5.
Which quantity remains constant for a given metal in Einstein’s photoelectric equation?
A.
Threshold frequency
B.
Planck’s constant
C.
The stopping potential
D.
The kinetic energy of photoelectrons
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ANSWER :
A. Threshold frequency
6.
Which equation explains the energy balance in the photoelectric effect?

NEET - 2015

A.
Planck’s equation
B.
Einstein’s photoelectric equation
C.
De Broglie’s equation
D.
Heisenberg’s uncertainty principle
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ANSWER :
B. Einstein’s photoelectric equation