Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2020

PhysicsEasysingle choice

The diagram shows a spherical surface which separates two media of refractive indices, $μ_{1}$ and $μ_{2}$ , respectively. Now, a point object is placed on the principal axis as shown in the figure. Then

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Solution:

$\frac{μ_{2}}{v} - \frac{μ_{1}}{- u} = \frac{μ_{2} - μ_{1}}{R}$

$\Rightarrow v = \frac{u R μ_{2}}{u (μ_{2} - μ_{1}) - R μ_{1}}$

$\Rightarrow v = \frac{u R μ_{2}}{u μ_{2} - μ_{1} (u + R)}$

We can see that $μ_{1} > μ_{2}$ then image distance is negative which means virtual image

Subject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at curved surface/Lens

⏱ 2mℹ️ Source: PYQ_2020

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