NEET Physics Wave Optics Questions Solved

In the adjacent diagram, CP represents a wavefront and AO & BP, the corresponding two rays. Find the condition on θ for constructive interference at P between the ray BP and reflected ray OP 

(1) cosθ = 3λ/2d

(2) cosθ = λ/4d

(3) secθ – cosθ = λ/d

(4) secθ – cosθ = 4λ/d

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