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A call is connected between the point A ...

A call is connected between the point A and C of a circular conductor ABCD of centre O with angle `AOC=60^(@)` . If `B_(1)` and `B_(2)` are the magnitudes of the magnetic field at O due ti the currents In ADC respectively, the ratio `(B_(1))/(B_(2))` is

A

Optical path difference at `'O'` is `((mu_(2))/(mu_(1))-1)t`.

B

Optical path difference at `'O'` is `(mu_(2)-mu_(1))t`.

C

Optical path difference is independent of position of glass plate, provided light from `S_(2)` passes through it.

D

None of the above

Text Solution

Verified by Experts

Equivalent length of the glass plate in water `=(mu_(2)t)/(mu_(1))`
`:. O.P.D.=((mu_(2))/(mu_(1))-1)t`
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