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Introduction to YDSE

Two light sou...

Question

Two light sources are coherent when:

A

Only their frequency are equal

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B

their wavelength are equal

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C

Their amplitudes are equal

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D

Time frequency are equal and their phase

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Solution

The correct option is A their wavelength are equal
$G i v e n :$ Two light sources are coherent when
$S o l u t i o n :$ If two independent sources emitting light of the same wavelength are said to be coherent.
$S o, t h e$ $c o r r e c t$ $o p t i o n : B$

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