Photo electric effect supports the quantum nature of light because:

electric charge of photoelectrons is quantized.

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the maximum K.E. of photoelectrons depends only on the frequency of light and not on its intensity.

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even when the metal surface is faintly illuminated by light of the approximate wavelength, the photo electrons leave the surface immediately.

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none of these

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Solution

The correct option is C even when the metal surface is faintly illuminated by light of the approximate wavelength, the photo electrons leave the surface immediately.
Photo electric effect supports the quantum nature of light because even when the metal surface is faintly illuminated by light of the approximate wavelength, the photo electrons leave the surface immediately.

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Similar questions

Q. Photoelectric effect supports quantum nature of light because
(a) there is a minimum frequency below which no photoelectrons are emitted
(b) the maximum kinetic energy of photoelectrons depends only on the frequency of light and not on its intensity
(c) even when the metal surface is faintly illuminated the photoelectrons leave the surface immediately
(d) electric charge of the photoelectrons is quantised

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a) There is a minimum frequency of light below which no photoelectrons are emitted.
b) The maximum kinetic energy of photo electrons depends only on the frequency.
c) Even when the metal surface is faintly illuminated, the photoelectrons leave the surface immediately.

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