Verified Solution • 2025–26 Session moderate

QNEET-2022-Ph-437: NEET 2022 Physics - Class 12 NEET-2022-Ph-437 Solution: When light propagates through a material medium of relative…

When light propagates through a material medium of relative permittivity ϵr\epsilon_r and relative permeability μr\mu_r the velocity of light v is given by (c-velocity of light in vacuum) v=cv = c v=ϵrμrv = \sqrt{\frac{\epsilon_r}{\mu_r}} v=μrϵrv = \sqrt{\frac{\mu_r}{\epsilon_r}} v=cϵrμrv = \frac{c}{\sqrt{\epsilon_r\mu_r}}

Multiple Choice Options

  • A v = c
  • B v=μrεrv = \sqrt {{{{\mu _r}} \over {{\varepsilon _r}}}} v = _ r _ _ r _ _ _
  • C v=εrμrv = \sqrt {{{{\varepsilon _r}} \over {{\mu _r}}}} v = _ r _ _ r _ _ _
  • D v=cεrμrv = {c \over {\sqrt {{\varepsilon _r}{\mu _r}} }} v = _ r _ _ r _ _ c _

Step-by-Step Verified Solution

v = 1 _ m _ m v = 1 _ 0 _ r _ 0 _ r Since c = 1 _ 0 _ 0 _ v = c _ r _ r

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