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  • Help me please, The two interfering waves have intensities in the ratio 9:4. The ratio of intensities of maxima and minima in the inetrference pattern will be

The two interfering waves have intensities in the ratio 9:4. The ratio of intensities of maxima and minima in the inetrference pattern will be

  • Option 1)

    1:25

  • Option 2)

    25:1

  • Option 3)

    9:4

  • Option 4)

    4:9

 

Answers (2)

best_answer

\frac{I_{max}}{I_{min}}= \left [\frac{ \sqrt{\frac{I_{1}}{I_{2}}}+ 1 }{ \sqrt{\frac{I_{1}}{I_{2}}}- 1 }\right ]^{2}

= \left [\frac{ \sqrt{\frac{9}{4}}+ 1 }{ \sqrt{\frac{9}{4}}- 2 }\right ]^{2} = 25/1

 

Ratio of maximum and minimum intensity -

\frac{I_{max}}{I_{min}}=\left ( \frac{\sqrt{I_{1}}+\sqrt{I_{2}}}{\sqrt{I_{1}}-\sqrt{I_{2}}} \right )^{2}

-

 

 

 


Option 1)

1:25

This is incorrect

Option 2)

25:1

This is correct

Option 3)

9:4

This is incorrect

Option 4)

4:9

This is incorrect

Posted by

divya.saini

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25:1

Posted by

Zabina

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