Light of frequency 1.5 times the threshold frequency is incident on photosensitive material. If the…
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
quadrupled
double
half
zero
Solution
When the frequency of incident light is halved of its original value i.e. $1.5 \mathrm{v}_0$ then it becomes less than the threshold value. In that case no photoelectric effect takes place. No photoelectrons would be emitted. The photoelectric current becomes zero.