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STD 12 - 10. Wave optics — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 10. Wave optics4 Marks
MCQ
Two coherent light source $A$ and $B$ are at a distance $3\, \lambda$ from each other $(\lambda =$ wavelength). The distances from $A$ on the $x$ -axis at which the  interference is constructive are 
  • A
    $3 \lambda$
  • ✓
    $4 \lambda$
  • C
    $\lambda / 4$
  • D
    $8.75 \lambda$
✓

Answer

Correct option: B.
$4 \lambda$
b

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