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10. Wave optics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics10. Wave optics1 Mark
MCQ
The light waves from two coherent sources have same intensity ${I}_{1}={I}_{2}={I}_{0} .$ In interference pattern the intensity of light at minima is zero.What will be the intensity of light at maxima?
  • A
    ${I}_{0}$
  • B
    $2 {I}_{0}$
  • C
    $5 {I}_{0}$
  • ✓
    $4 {I}_{0}$
✓

Answer

Correct option: D.
$4 {I}_{0}$
d
${I}_{\max }=\left(\sqrt{{I}_{1}}+\sqrt{{I}_{2}}\right)^{2}$

$=4 \,{I}_{0}$

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