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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at plane surfaceEasy2 minPYQ_2020

PhysicsEasysingle choice

Time taken by the sunlight to pass through a slab of $4 cm$ and refractive index $1.5$ is _____ $s$ .

Options:

Answer:

Solution:

$d = 4 c m$

$μ = 1.5$

$μ = \frac{c}{v} \Rightarrow v = \frac{c}{μ} = \frac{3 \times 10^{8}}{1.5} = 2 \times 10^{8} m s^{- 1}$

Time $t = \frac{d}{v} = \frac{4 \times 10^{- 2}}{2 \times 10^{8}} = 2 \times 10^{- 10} s$

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

⏱ 2mℹ️ Source: PYQ_2020

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