Questions
In photoelectric effect, the photo-current
a
increases with increase of frequency of incident photon
b
decreases with increase of frequency of incident photon
c
does not depend on the frequency of photon but depends only on the intensity of incident light
d
depends both on intensity and frequency of the incident photon
detailed solution
Correct option is C
By increasing frequency, the energy of incident photon is changed but the number of photons is not changed. To increase the photo-current, the number of electrons emitted per second should be increased. This can be done by increasing the incident intensityTalk to our academic expert!
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A laser beam of output power ‘P’ consists only of wavelength . If Planck’s constant is h and the speed of light is c, then the number of photons emitted per second is
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