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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,
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The correct answer is:
$D_1 \lt D_2$
$D=(\mu-1) A$
For blue light $\mu$ is greater than that for red light, so $D_2 \gt D_1$.
For blue light $\mu$ is greater than that for red light, so $D_2 \gt D_1$.
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