Two prisms A and B are in contact with each other have angular dispersions of 2^@ and 4^@ respectively.The dispersive power of 'A' is 0.002. If the combination produces dispersion without deviation, the dispersive power of 'B' is

Two prisms A and B are in contact with each other have angular dispers

1.	Two prisms A and B are in contact with each other have angular dispersions of 2^@ and 4^@ respectively.The dispersive power of 'A' is 0.002. If the combination produces dispersion without deviation, the dispersive power of 'B' is
Answer» 0.001 0.004 0.002 0.006 Answer :B

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Two prisms A and B are in contact with each other have angular dispersions of 2^@ and 4^@ respectively.The dispersive power of 'A' is 0.002. If the combination produces dispersion without deviation, the dispersive power of 'B' is

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