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JIPMER 2009

Exam: JIPMER
Year: 2009
Subject: Physics
Chapter: Ray Optics

JIPMER 2009 · Physics · Ray Optics

The refractive index of glass is 1.520 for red light and 1.525 for...

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 deviation for red and blue light respectively in a prism of this glass. then,

Options

A $D_1 \lt D_2$
B $D_1=D_2$
C $D_1$ can be less than or greater than $D_2$ depending upon the angle of prism
D $D_1 \gt D_2$

Correct answer

A. $D_1 \lt D_2$

Step-by-step solution

D=(\mu-1) A

For blue light

\mu

is greater than that for red light, so

D_2 \gt D_1

.

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