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प्रश्न
What is the ratio of the speed of gamma rays to that of radio waves in a vacuum?
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संबंधित प्रश्न
A plane electromagnetic wave is travelling through a medium along the +ve z-direction. Depict the electromagnetic wave showing the directions of the oscillating electric and magnetic fields.
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A plane EM wave travelling along z direction is described by `E = E_0 sin (kz - ωt)hati` and `B = B_0 sin (kz - ωt)hatj`. show that
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- The time averaged intensity of the wave is given by `I_(av) = 1/2 cε_0 E_0^2`.
