Last Updated On 01-06-2023 - By Jeesha Sara
The electric field of a plane electromagnetic wave varies with time of amplitude 
propagating along 
-axis. The average energy density of the magnetic field is (in 
)
a)
b)
c)
d)
The electric field of a plane electromagnetic wave varies with time of amplitude propagating along -axis. The average energy density of the magnetic field is (in )
a)
b)
c)
d)
Question ID - 150045 :-
The electric field of a plane electromagnetic wave varies with time of amplitude propagating along -axis. The average energy density of the magnetic field is (in )
a)
b)
c)
d)
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The electric field of a plane electromagnetic wave varies with time of amplitude |
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(b) Amplitude of electric field and magnetic field are related by the relation
Average energy density of the magnetic field is
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Next Question :
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Angular width of central maxima in the Fraunhoffter diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength |
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. When the slit is illuminated by light of another wavelength, the angular width decreases by 30%. The wavelength of this light will be
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