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The number of photons falling per second...

The number of photons falling per second on a completely darkened plate to produce a force of `6.62xx10^-5N` is 'n'. If the wavelength of the light falling is `5xx10^-7`m, then n= __________ `xx10^22.`
`(h=6.62 xx10^-34 J-s )`

A

1

B

5

C

0.2

D

3.3

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The correct Answer is:
B
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