(C) The intensity of the electromagnetic radiation is given as $I = 10^3 \ W m^{-2}$.The area of the roof is $A = \text{length} \times \text{width} =

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(C) The intensity of the electromagnetic radiation is given as $I = 10^3 \ W m^{-2}$.The area of the roof is $A = \text{length} \times \text{width} = 6 \ m \times 30 \ m = 180 \ m^2$.The power $P$ incident on the surface is given by the product of intensity and area:$P = I \times A$$P = 10^3 \ W m^{-2} \times 180 \ m^2$$P = 1.8 \times 10^5 \ W$.

Class 12 Physics Electromagnetic Waves Mix Examples- Electromagnetic waves

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The electromagnetic flux from the Sun reaching the Earth is $10^3 \ W m^{-2}$. What is the power incident on a roof of dimensions $6 \ m \times 30 \ m$?

A
$7.2 \times 10^5 \ W$
B
$4.5 \times 10^5 \ W$
C
$1.8 \times 10^5 \ W$
D
$0.9 \times 10^5 \ W$

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Mix Examples- Electromagnetic waves

For an $EM$ wave,the electric and magnetic fields are $300 \ V m^{-1}$ and $7.9 \ A m^{-1}$ respectively. The maximum rate of energy flow is, (in $W m^{-2}$)

MediumTS EAMCET 2021

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Match the following List-$I$ with the List-$II$:
List-$I$ List-$II$
$(A)$ Gauss's law $(I)$ Surface charge density
$(B)$ Faraday's law $(II)$ Electric charge and energy conservation
$(C)$ Ampere's law $(III)$ Change in magnetic flux
$(D)$ Kirchhoff's law $(IV)$ Change in electric flux
$(V)$ Total electric flux

List-$I$	List-$II$
$(A)$ Gauss's law	$(I)$ Surface charge density
$(B)$ Faraday's law	$(II)$ Electric charge and energy conservation
$(C)$ Ampere's law	$(III)$ Change in magnetic flux
$(D)$ Kirchhoff's law	$(IV)$ Change in electric flux
	$(V)$ Total electric flux

EasyAP EAMCET 2018

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In an electromagnetic wave,the electric field and magnetising field are $100\,V\,m^{-1}$ and $0.265\,A\,m^{-1}$ respectively. The maximum energy flow is.......$W\,m^{-2}$.

Medium

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Assertion : Environmental damage has increased the amount of ozone in the atmosphere.
Reason : Increase of ozone increases the amount of ultraviolet radiation on earth.

EasyAIIMS 2014

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If two linear antennas having lengths in the ratio $2: 3$ are emitting radiation of wavelengths in the ratio $8: 9$, then the ratio of effective powers radiated by them are in the ratio

EasyAP EAMCET 2017

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The electromagnetic flux from the Sun reaching the Earth is $10^3 \ W m^{-2}$. What is the power incident on a roof of dimensions $6 \ m \times 30 \ m$?

Similar Questions

For an $EM$ wave,the electric and magnetic fields are $300 \ V m^{-1}$ and $7.9 \ A m^{-1}$ respectively. The maximum rate of energy flow is, (in $W m^{-2}$)

In an electromagnetic wave,the electric field and magnetising field are $100\,V\,m^{-1}$ and $0.265\,A\,m^{-1}$ respectively. The maximum energy flow is.......$W\,m^{-2}$.

Assertion : Environmental damage has increased the amount of ozone in the atmosphere.Reason : Increase of ozone increases the amount of ultraviolet radiation on earth.

If two linear antennas having lengths in the ratio $2: 3$ are emitting radiation of wavelengths in the ratio $8: 9$, then the ratio of effective powers radiated by them are in the ratio

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Assertion : Environmental damage has increased the amount of ozone in the atmosphere.
Reason : Increase of ozone increases the amount of ultraviolet radiation on earth.