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

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 10. Wave optics4 Marks
MCQ
Light waves producing interference have their amplitudes in the ratio $3 : 2$. The intensity ratio of maximum and minimum of interference fringes is
  • A
    $36:1$
  • B
    $9:4$
  • ✓
    $25:1$
  • D
    $6:4$
✓

Answer

Correct option: C.
$25:1$
c
(c)$\frac{{{I_{\max }}}}{{{I_{\min }}}} = {\left( {\frac{{\frac{{{a_1}}}{{{a_2}}} + 1}}{{\frac{{{a_1}}}{{{a_2}}} - 1}}} \right)^2} = \frac{{25}}{1}$

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