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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at plane surfaceEasy2 minPYQ_2020

PhysicsEasysingle choice

Refractive index of glass with respect to the medium is $\frac{4}{3}$ . If the difference between velocities of light in medium and glass is $6.25 \times 10^{7} {m s}^{- 1},$ then the velocity of light in medium is

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Answer:

Solution:

So, velocity of light in glass

$V_{g} = \frac{V_{m}}{μ}$

$V_{m} - V_{g} = V_{m} - \frac{V_{m}}{μ}$

$∴ 6.25 \times 10^{7} = V_{m} (1 - \frac{1}{\frac{4}{3}})$

$V_{m} = 6.25 \times 10^{7} \times 4$

$= 2 .5 \times 10^{8} m s^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at plane surface

⏱ 2mℹ️ Source: PYQ_2020

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