In the photoelectric experiment, if we use a monochromatic light, the – McqOptions

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1.	In the photoelectric experiment, if we use a monochromatic light, the I-V curve is as shown. If work function of the metal is 2eV, estimate the power of light used. (Assume efficiency of photo emission \[{{10}^{-3}}%\], i.e., number of photoelectrons emitted are \[{{10}^{-3}}%\]of number of photons incident on metal)
A.	2W
B.	5W
C.	7W
D.	10W
Answer» D. 10W

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