A double slit arrangement produces fringes for light `lambda=5890Å` which are `0.2^@` apart. If the whole arrangement is fully dipped in a liquid of `mu=4/3`, the angular fringes separation isA. (a) `0.15^@`B. (b) `0.30^@`C. (c) `0.10^@`D. (d) `0.25^@`

A double slit arrangement produces fringes for light `lambda=5890Å` w

1.	A double slit arrangement produces fringes for light `lambda=5890Å` which are `0.2^@` apart. If the whole arrangement is fully dipped in a liquid of `mu=4/3`, the angular fringes separation isA. (a) `0.15^@`B. (b) `0.30^@`C. (c) `0.10^@`D. (d) `0.25^@`
Answer» Correct Answer - A New wavelength is `3/4` times the old wavelength. So, the new angular separation is `3/4xx0.2^@` or `0.15^@`.

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A double slit arrangement produces fringes for light `lambda=5890Å` which are `0.2^@` apart. If the whole arrangement is fully dipped in a liquid of `mu=4/3`, the angular fringes separation isA. (a) `0.15^@`B. (b) `0.30^@`C. (c) `0.10^@`D. (d) `0.25^@`

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