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Do electromagnetic waves carry energy an...

Do electromagnetic waves carry energy and momentum?

Text Solution

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Yes, As Electromagnetic waves contain both electric and magnetic field, there is a non- zero energy density associated with it.
E = `(hc)/(lambda)`
Momentum p
`= ("Total energy transferred to the surface ")/("Velocity of light in vacuum")`
i.e.p `= (U)/(c )` = mc.
U - total energy transfered to the surface . EM waves carries not only energy and momentum but also angular momentum.
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