Photoelectric Effect NEET Questions

Physics - Dual Nature of Matter and Radiation

Photoelectric Effect MCQ Questions


13.
The maximum kinetic energy of photoelectrons emitted depends on the

NEET - 2015

A.
Intensity of light
B.
Frequency of light
C.
Wavelength of light
D.
Angle of incidence
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ANSWER :
B. Frequency of light
14.
Which of the following metals has the highest work function?
A.
Cesium
B.
Potassium
C.
Sodium
D.
Platinum
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ANSWER :
D. Platinum
15.
The stopping potential in a photoelectric experiment is directly proportional to:
A.
Intensity of incident light
B.
Frequency of incident light
C.
Work function of the metal
D.
Number of photoelectrons emitted
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ANSWER :
B. Frequency of incident light
16.
What happens to photoelectric current when the intensity of incident light increases?
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
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ANSWER :
A. Increases
17.
Which of the following statements is true about the photoelectric effect?
A.
It supports the wave nature of light
B.
It supports the particle nature of light
C.
It contradicts quantum theory
D.
It is independent of the metal used
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ANSWER :
B. It supports the particle nature of light
18.
What happens to the stopping potential if the frequency of light increases?
A.
Remains the same
B.
Increases
C.
Decreases
D.
No change
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ANSWER :
B. Increases