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When light of intensity 1W//m^2 and wave...

When light of intensity `1W//m^2` and wavelength `5xx10^(-7)`m is incident on a surface, it is completely absorbed by the surface. If 100 photons emit one electron and area of the surface is `1cm^2` ,then the photoelectric current will be

A

2mA

B

`0.4 muA`

C

4.0 mA

D

`4 muA`

Text Solution

Verified by Experts

The correct Answer is:
B
0.4 `mu` A (3) 4.0 mA (4) `mu` A
Number of photon / second `N=(IA)/((hc)/(lambda))`
Number of photo electron emitted/second `=N/100`
Photo electric current `=N/100xxe`
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