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


7.
What is the significance of Einstein’s photoelectric equation?
A.
It supports wave-particle duality
B.
It explains blackbody radiation
C.
It explains the nature of photons
D.
It supports classical physics
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ANSWER :
B. It explains blackbody radiation
8.
The photoelectric equation supports which nature of light?
A.
Wave nature
B.
Particle nature
C.
Both wave and particle nature
D.
None of the above
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ANSWER :
C. Both wave and particle nature
9.
Which scientist first explained the photoelectric effect using quantum theory?
A.
Max Planck
B.
Albert Einstein
C.
J.J. Thomson
D.
Wilhelm Röntgen
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ANSWER :
B. Albert Einstein
10.
According to Einstein’s photoelectric equation, the maximum kinetic energy of photoelectrons is given by:

NEET - 2016

A.
hν + ϕ
B.
hν – ϕ
C.
ϕ – hν
D.
hν / ϕ
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ANSWER :
B. hν – ϕ
11.
In Einstein’s photoelectric equation, what is the role of Planck’s constant (h)?
A.
It determines energy of photons
B.
It acts as a proportionality constant
C.
It relates energy and frequency
D.
It defines momentum of electrons
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ANSWER :
A. It determines energy of photons
12.
What is the threshold frequency in Einstein’s photoelectric equation?
A.
The minimum frequency required for emission
B.
The maximum frequency that can cause emission
C.
The energy required to emit electrons
D.
The energy of a photon
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ANSWER :
A. The minimum frequency required for emission