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A lamp radiates power uniformly in all directions, the amplitude of electric field strength at a distance r from it is
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Correct option is B
I0=12ε0E02 CP04πr2=12ε0E02CEo=P02πε0cr2Talk to our academic expert!
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The electric field on an electromagnetic wave is given by The energy contained in a cylinder of cross-section 10 cm2 and length 50 cm along the x-axis will be
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