In a photoelectric effect experiment a light of
frequency 1.5 times the threshold frequency is
made to fall on the surface of photosensitive
material. Now if the frequency is halved and
intensity is doubled, the number of photo electrons emitted will be:

 (1) Doubled 

(2) Quadrupled

 (3) Zero 

(4) Halved                                                 JEE-2024

Solution:                
In a photoelectric effect experiment a light of frequency 1.5 times the threshold frequency is made to fall on the surface of photosensitive material. Now if the frequency is halved and intensity is doubled, the number of photo electrons emitted will be: (1) Doubled (2) Quadrupled (3) Zero (4) Halved JEE-2024

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