Dual Nature of Matter and Radiation NDA Questions

NDA Physics

Dual Nature of Matter and Radiation MCQ Questions


13.
In the photoelectric effect, the maximum kinetic energy of the emitted electrons depends on
A.
the intensity of incident light.
B.
the frequency of incident light.
C.
the wavelength of incident light.
D.
the number of photons hitting the surface.
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ANSWER :
B. the frequency of incident light.
14.
According to the de Broglie hypothesis, matter exhibits wave properties. Which of the following particles will have the longest wavelength if they are all moving at the same velocity?
A.
Proton
B.
Neutron
C.
Electron
D.
Alpha particle
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ANSWER :
C. Electron
15.
The work function of a metal is
A.
the maximum energy of emitted electrons.
B.
the minimum energy required to remove an electron from the metal surface.
C.
the energy lost by electrons in collisions.
D.
the kinetic energy of the emitted electrons.
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ANSWER :
B. the minimum energy required to remove an electron from the metal surface.
16.
Einstein’s explanation of the photoelectric effect provided evidence for which property of light?
A.
Light as a wave
B.
Light as a particle
C.
Light as a continuous spectrum
D.
Light as a transverse wave
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ANSWER :
D. Light as a transverse wave
17.
What does the wave function in quantum mechanics represent?
A.
Position of a particle
B.
Probability amplitude
C.
Velocity of a particle
D.
Energy of a particle
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ANSWER :
B. Probability amplitude
18.
Which of the following is NOT a property of photons?
A.
They have no mass
B.
They travel at the speed of light
C.
They have a positive charge
D.
They exhibit both wave and particle properties
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ANSWER :
C. They have a positive charge