Question

If Planck’s constant is denoted by h and electronic charge by e, then photoelectric effect allows determination of:

A

Only h

B

Only e

C

Both h and e

D

Only h/e

Easy

Solution

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Correct option is
D

Only h/e

In photoelectric effect we can know only the stopping potential.
Stopping potential
                               
So, we can determine only because we know stopping potential, frequency and work function of the metal.

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