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Two prisms A and B have dispersive power...

Two prisms A and B have dispersive powers of 0.012 and 0.018 respectively. The two prisms are in contact with each other. The prism A produces a mean deviation of `1.2^(@)`, the mean deviation produced by B if the combination is achromatic is

A

`3.6^@ `

B

`0.8^@`

C

`0.4^@`

D

`1.8^@`

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The correct Answer is:
B
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AAKASH SERIES-GEOMETRICAL OPTICS-LECTURE SHEET (EXERCISE-II (LEVEL-II (ADVANCED) STRAIGHT OBJECTIVE TYPE QUESTIONS))
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