A beam of light of wavelength $400 nm$ and power $1.55 mW$ is directed at the cathode of a photoelectric cell. If only $10%$ of the incident photons effectively produce photoelectrons, then find current due to these electrons ( $h c = 1240 eV$ , $e = 1 c d o t 6 \times 1 0^{- 19} C$ ) : (AIIMS 2015)

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A beam of light of wavelength

400 nm

and power

1.55 mW

is directed at the cathode of a photoelectric cell. If only

10%

of the incident photons effectively produce photoelectrons, then find current due to these electrons (

h c = 1240 eV

e = 1 c d o t 6 \times 1 0^{- 19} C

) : (AIIMS 2015)

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Question Text	A beam of light of wavelength $400 nm$ and power $1.55 mW$ is directed at the cathode of a photoelectric cell. If only $10%$ of the incident photons effectively produce photoelectrons, then find current due to these electrons ( $h c = 1240 eV$ , $e = 1 c d o t 6 \times 1 0^{- 19} C$ ) : (AIIMS 2015)
Topic	Atoms, Nuclei & Dual nature
Subject	Physics
Class	Class 12

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