Question

A quartz prism can produce a minimum deviation $\delta$ in a light beam. Then the minimum deviation produced by three prisms combined together is

• A. $2\delta$
• B. $0$
• C. $\delta$
• D. $3\delta$

Answer 1

Answer: (C)

$\delta$

Answer 2

Total deviation produced by the combination of prisms $=\delta-\delta+\delta=\delta$