Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Photoelectric effect supports quantum nature of light because (1) there is minimum frequency of light below which no photoelectrons are emitted (2) the maximum kinetic energy of photoelectrons depends only on the frequency of light and not on its intensity (3) even when the metal surface is faintly illuminated, the photoelectrons leave the surface immediately (4) electric charge of photoelectron is quantizedA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: A
Solution :
There exists a threshold frequency. Moreover, photoelectric effect is instantaneous. Hence, option is correct.
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