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Two slits in Young's double slit experim...

Two slits in Young's double slit experiment have widths in the ratio 81:1. What is the the ratio of amplitudes of light waves coming from them ?

A

`3:1`

B

`3:2`

C

`9:1`

D

`6:1`

Text Solution

Verified by Experts

The correct Answer is:
C
Width ratio, `(beta_(1))/(beta_(2))=(I_(1))/(I_(2))=(81)/(1)`
` :.` Amplitude ratio, `(A_(1))/(A_(2))=sqrt((I_(1))/(I_(2)))=sqrt((81)/(1))=9:1`
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