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The surface which doesn.t reflect is giv...

The surface which doesn.t reflect is given incidence light with `18 W//cm^(2)` energy flux, than what will be the pressure?

A

`2 N//m^2`

B

`2xx10^(-4)N//m^2`

C

`6 N//m^2`

D

`6xx10^(-4) N//m^2`

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
`P=("energy flux")/("speed")`
`=(18W //cm^2)/(3xx10^8 m//s)`
`=(18xx10^4 W//m^2)/(3xx10^8 m//s)`
`therefore P=6xx10^(-4) N//m^2`
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