Question

The photocurrent in an experiment on photoelectric effect increases if

Answer 1

increases the intensity while keeping frequency fixed increases the no. of photons hitting the metal and hence it increases the rate at which electrons are emitted.

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Answer 2

Q. The photocurrent in an experiment on photoelectric effect increases if

(a) the intensity of the source is increased

(b) the exposure time is increased

(c) the intensity of the source is decreased

(d) the exposure time is decreased.

Answer:

(a) the intensity of the source is increased .

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