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Two tangent galvanometers, which are ide...

Two tangent galvanometers, which are identical except in their number of turns, are connected in parallel. The ratio of their resistance of the coils is `1 : 3`. If the deflections in the two tangent galvanometers are `30^@` and `60^@` respectively, then the ratio of their number of turns is

A

`1 : 1`

B

`3 : 1`

C

`1 : 2`

D

`1 : 6`.

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