Dual Nature of Radiation NEET Questions

Physics - Dual Nature of Matter and Radiation

Dual Nature of Radiation MCQ Questions


13.
The time lag between incidence of light and emission of photoelectrons is approximately:
A.
Several minutes
B.
10⁻³ s
C.
10⁻⁹ s or less
D.
1 second
😑 View Answer Rough Work Error
ANSWER :
C. 10⁻⁹ s or less
14.
Saturation current in a photoelectric experiment depends on:
A.
Stopping potential
B.
Work function of metal
C.
Frequency of incident light
D.
Intensity of incident light
😑 View Answer Rough Work Error
ANSWER :
D. Intensity of incident light
15.
Einstein's photoelectric equation is:
A.
Kₘₐₓ = hν − φ₀
B.
Kₘₐₓ = hν + φ₀
C.
Kₘₐₓ = hν × φ₀
D.
Kₘₐₓ = φ₀ − hν
😑 View Answer Rough Work Error
ANSWER :
A. Kₘₐₓ = hν − φ₀
16.
In Einstein's photoelectric equation, the threshold frequency ν₀ equals:
A.
φ₀ × c
B.
φ₀/h
C.
hφ₀
D.
h/φ₀
😑 View Answer Rough Work Error
ANSWER :
B. φ₀/h
17.
The graph of stopping potential V₀ versus frequency ν of incident light is:
A.
A straight line with slope e/h
B.
An exponential curve
C.
A parabola
D.
A straight line with slope h/e
😑 View Answer Rough Work Error
ANSWER :
D. A straight line with slope h/e
18.
The slope of stopping potential versus frequency graph is:
A.
Different for different metals
B.
Depends on temperature
C.
Same for all metals
D.
Depends on intensity
😑 View Answer Rough Work Error
ANSWER :
C. Same for all metals