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The sun delivers 10^3W//m^2 of electroma...

The sun delivers `10^3W//m^2` of electromagnetic flux to the earth's surface.The total power that is inclident on a roof of dimensions `8mxx20m`, will be

A

`6.4 xx 10^(3)` W

B

`3.4 xx 10^(4)` W

C

`1.6 xx 10^(5)` W

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
`P = 10^(3) xx 160 = 1.6xx 10^(5)`W
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NARAYNA-ELECTROMAGNETIC WAVES -EXERCISE -2(C.W)
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  2. A parallel plate condenser has conducting plates of radius 12 cm separ...

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  3. A condenser has two conducting plates of radius 10cm separated by a di...

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  4. An AC rms voltage of 2V having a frequency of 50KHz is applied to a co...

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  5. The wave emitted by any atom or molecule must have some finite total l...

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  6. A wave is propagating in a medium of dielectric constant 2 and relativ...

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  7. A plane electromagnetic wave propagating in the x-direction has wavele...

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  8. The magnetic field In a travelling electromagnetic wave has a peak val...

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  9. A plane electromagnetic wave of frequency 40 MHz travels in free space...

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  10. A plane electromagnetic wave of wave intensity 6 W//m^(2) strikes a sm...

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  11. In the above question the radiation force on the mirror will be

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  12. The sun delivers 10^(3) W//m^(2) of electromagnetic flux is incident ...

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  13. A point source of electromagnetic radiation has an average power outpu...

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  14. An electromagnetic radiation has an energy 14.4 KeV. To which region o...

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  15. A lamp radiates power P(0) uniformly in all directions, the amplitude ...

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  16. A laser beam can be focussed on an area equal to the square of its wav...

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  17. The intensity of solar radiation of the earths surface is 1KWm^(-2). T...

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  18. A flood light is covered with a fitter than transmits red light. The e...

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  19. The sun delivers 10^3W//m^2 of electromagnetic flux to the earth's sur...

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  20. Electromagnetic waves of frequency 1.2xx10^(15)Hz enters into water an...

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