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The refractive index of glass is 1.520 f...

The refractive index of glass is 1.520 for red light and 1.525 for blue light. Let D 1, and D 2, be angles of minimum deviations for red and blue light respectively in a prism of this glass. Then,

A

`D_1gt D_2`

B

`D_1lt D_2`

C

`D_1=D_2`

D

can be less than or greater than `D_2`, depending upon the angle of prism.

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
Minimum deviation angle D=`(mu-1)A`
`thereforeD prop mu`
and `mu_("violet") gt mu_("red")`
`therefore D_2 gt D_1` hence, `D_1 lt D_2`
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KUMAR PRAKASHAN-RAY OPTICS AND OPTICAL INSTRUMENTS-SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs ASKED IN COMPETITIVE EXAMS)
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