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In an interference experiment, the ratio of amplitudes of coherent waves is $\frac{a_{1}}{a_{2}} = \frac{1}{3}$ . The ratio of maximum and minimum intensities of fringes will be

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detailed solution

Correct option is C

$\frac{I_{\max}}{I_{\min}} = {(\frac{a_{1} + a_{2}}{a_{1} - a_{2}})}^{2}$

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In an interference experiment, the ratio of amplitudes of coherent waves is a1a2=13. The ratio of maximum and minimum intensities of fringes will be