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Assume standard notations used for dispe...

Assume standard notations used for dispersion and deviation is a prism, in the following formulae:
(a) `del=del_(gamma)` (b) `del=(n_(gamma)-1)A`
( c) `theta=del_(v)-del_(R)` (d) `theta=(n_(V)-n_(R))A`
State which option(s) is / are correct.

A

a and b are equivalent for a prism of small angle A, irrespective of I

B

The ratios of `theta//del` given by, using c and a, and using b and d, are same for a prism with small angle A, irrespective of I

C

b and d represent the most basic definitions of `theta` and `del` for a prism with small angle A, irrespective of I

D

a and c represent the most basic definitions of `theta` and `del` for a prism with small angle A, irrespective of :

Text Solution

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The correct Answer is:
D
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