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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsReflection at curved surfaceMedium2 minPYQ_2009

PhysicsMediumsingle choice

A short linear object, of length $l$ , lies along the axis of a concave mirror, of focal length $f$ , at a distance $d$ from the pole of the mirror. The size of the image is then (nearly)

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Solution:

Use $\frac{1}{v} + \frac{1}{u} = \frac{1}{f}$ Find $v_{1}$ , when $u = d$ and $v_{2}$ , when $u = d + l$ Size of image $= v_{1} - v_{2} = l (\frac{f}{d - f})^{2}$

Stream:AIIMSSubject:PhysicsTopic:Geometrical OpticsSubtopic:Reflection at curved surface

⏱ 2mℹ️ Source: PYQ_2009

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