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A radio wave of intensity / isn reflcte...

A radio wave of intensity / isn reflcted by a surface. Find intersity (l), if pressure exerted on the surface is `2xx10^(-8)N//m^(2)`.

A

`3N//m^(2)`

B

`4N//m^(2)`

C

`6N//m^(2)`

D

`7N//m^(2)`

Text Solution

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If the intensity of the incident radio wave of 1 "watt"//m^2 is reflected by the surface, find the pressure exerted on the surface.

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Knowledge Check

  • If the intensity of the incident radio wave of 1watt m^2 is reflected by the surface. Find the pressure exerted on the surface?

    A
    `7 xx 10^(-9)"N/m"^2`
    B
    `8 xx 10^(-9)"N/m"^2`
    C
    `6 xx 10^(-10)"N/m"^2`
    D
    `10^(-19)"N/m"^2`

  • A "50 W m"^(-2) energy density of sunlight is incident normally on the surface of a solar panel. Some part of incident energy (25%) is reflected from the surface and the rest is absorbed. The force exerted on 1m^(2) surface area will be close to (c=3xx10^(8)ms^(-1))

    A
    `25xx10^(-8)N`
    B
    `20xx10^(-8)N`
    C
    `10xx10^(-8)N`
    D
    `35xx10^(-8)N`

  • An electromagnetic wave with intensity vector 6 watt/ "m"^2 is absorbed by a surface of area 12 "m"^2 . Find the force on the surface?

    A
    24N
    B
    `24 xx 10^(10)`N
    C
    `24 xx 10^(-10)`N
    D
    `24 xx 10^(-8)`N

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