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)

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


1.
Einstein proposed his quantum theory of the photoelectric effect in:
A.
1916
B.
1921
C.
1887
D.
1905
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ANSWER :
D. 1905
2.
According to Einstein, electromagnetic radiation is composed of:
A.
Discrete units called quanta (photons), each of energy hν
B.
Streams of magnetic monopoles
C.
Negatively charged particles
D.
Continuous waves with continuously distributed energy
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ANSWER :
A. Discrete units called quanta (photons), each of energy hν
3.
In Einstein's photon theory, each quantum of radiant energy has energy:
A.
E = hν (where h is Planck's constant and ν is frequency)
B.
E = hc (where c is speed of light)
C.
E = h/ν
D.
E = hν²
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ANSWER :
A. E = hν (where h is Planck's constant and ν is frequency)
4.
The fundamental basis of Einstein's photoelectric equation is:
A.
Heisenberg's uncertainty principle
B.
Maxwell's wave equations
C.
Energy conservation in absorption of one photon by one electron
D.
Momentum conservation between two photons
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ANSWER :
C. Energy conservation in absorption of one photon by one electron
5.
Einstein's photoelectric equation is written as:
A.
Kₘₐₓ = φ₀ − hν
B.
Kₘₐₓ = (hν)(φ₀)
C.
Kₘₐₓ = hν + φ₀
D.
Kₘₐₓ = hν − φ₀
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ANSWER :
D. Kₘₐₓ = hν − φ₀
6.
In Einstein's photoelectric equation Kₘₐₓ = hν − φ₀, the term φ₀ represents:
A.
Total energy of the photon
B.
Maximum kinetic energy of the photoelectron
C.
Work function — minimum energy needed to escape the metal surface
D.
Frequency of incident light
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ANSWER :
C. Work function — minimum energy needed to escape the metal surface
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