\( M_{1} \) and \( M_{2} \) are two plane mirrors which are kept parallel to each other as shown...
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0\( M_{1} \) and \( M_{2} \) are two plane mirrors which are kept parallel to each other as shown. There is a point \( O \) on perpendicular screen just infront of \( S \) . What should be the wavelength of light coming from monchromatic source S. So that a maxima is formed at O due to interference of reflected light from both the mirrors. [Consider only \( 1^{\text {st }} \) reflection]. \( [Dd, d\lambda] \)
(A) \( \frac{3 d^{2}}{D} \)
(B) \( \frac{3 d^{2}}{2 D} \)
(C) \( \frac{d^{2}}{D} \)
(D) \( \frac{2 d^{2}}{D} \)
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