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A beam of light of wavelength 400nm and ...

A beam of light of wavelength 400nm 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. (given `hc=1240 eV-nm, e=1.6xx10^(-19)C`)

A

`5muA`

B

`40muA`

C

`50muA`

D

`114muA`

Text Solution

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The correct Answer is:
C
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