Assertion (A) : Light added to light can produce darkness. 1 Reason...

Question

Assertion (A) : Light added to light can produce darkness. 1 Reason (R) : When two coherent light waves interfere, there is darkness at position of destructive interference.

Accepted Answer

Assertion (A) is TRUE: when two coherent light waves interfere destructively, the resultant intensity can be zero (darkness), even though both individual waves carry light energy.

Reason (R) is TRUE and correctly explains this: at points of destructive interference between coherent waves, the resultant amplitude (and hence intensity) is minimum/zero.

Answer: Both A and R are true, and R is the correct explanation of A.

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