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QNEET-2020-Ph-718: NEET 2020 Physics - Class 12 NEET-2020-Ph-718 Solution: Light of frequency 1.5 times the threshold frequency is…
Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if the frequency is halved and intensity is doubled? four times one-fourth zero doubled
Multiple Choice Options
- A four times
- B one-fourth
- C zero
- D doubled
Step-by-Step Verified Solution
v = 3 2 v 0
and v _ = v 2 = 3 4 v 0
Here we see v _ < v _ < v 0
Below threshold frequency, no photo-electric emission takes place.