1.

Two coherent monochromatic light beams of intensities I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam areA. 5I and IB. 5I and 3IC. 9I and ID. 9I and 3I

Answer» Correct Answer - C
`I_(max)=(sqrt(I_(1))+sqrt(I_(2)))^(2)=(sqrt(4I)+sqrt(I))^(2)=9I`
`I_("min")=(sqrt(I_(1))-sqrt(I_(2)))^(2)=(sqrt(4I)-sqrt(I))^(2)=I`


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