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Ray Optics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsRay Optics1 Mark
MCQ
Which of the following is a correct relation
  • A
    (a) ${ }_a \mu_r={ }_a \mu_w \times{ }_r \mu_\omega$
  • B
    (b) ${ }_a \mu_r \times{ }_r \mu_w={ }_w \mu_a$
  • C
    (c) ${ }_a \mu_r \times{ }_r \mu_a=0$
  • ✓
    (d) ${ }_a \mu_r /{ }_w \mu_r={ }_a \mu_w$
✓

Answer

Correct option: D.
(d) ${ }_a \mu_r /{ }_w \mu_r={ }_a \mu_w$
(d) $\frac{{ }_a \mu_r}{{ }_w \mu_r}=\frac{\mu_r / \mu_a}{\mu_r / \mu_w}=\frac{\mu_w}{\mu_a}={ }_a \mu_w$

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