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Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
In the adjacent diagram, CP represents a wavefront and AO & BP, the corresponding two rays. Find the condition on q for constructive interference at P between the ray BP and reflected ray OP
  • A
    cosq = 3l/2d
  • ✓
    cosq = l/4d
  • C
    secq – cosq = l/d
  • D
    secq – cosq = 4l/d
✓

Answer

Correct option: B.
cosq = l/4d
(b) cosq = l/4d

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