First slide

Coherent sources and their importance in interference

Question

In the interference pattern, energy is

Easy

A

Created at the position of maxima
B

Destroyed at the position of minima
C

Conserved but is redistributed
D

None of the above

Solution

In interference of light the energy is transferred from the region of destructive interference to the region of constructive interference. The average energy being always equal to the sum of the energies of the interfering waves. Thus the phenomenon of interference is in complete agreement with the law of conservation of energy.

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