Question 308: Dual Nature of Matter and Radiation

Question

Light of frequency 1.5 times the threshold frequency is incident on photosensitive material. If the frequency is halved and intensity is doubled, the photocurrent becomes

Accepted Answer

If threshold frequency is $$
u_0$$, then light frequency becomes $$1.5 ~
u_0$$.
If we make it half it becomes $$0.75 ~
u_0$$, which is smaller than threshold frequency, therefore photoelectric current is zero.

Answer

quadrupled

Answer

double

Answer

half

Answer

zero

Dual Nature of Matter and Radiation

Light of frequency 1.5 times the threshold frequency is incident on photosensitive material. If the frequency is halved and intensity is doubled, the photocurrent becomes

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