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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsReflection at curved surfaceEasy2 minPYQ_2020

PhysicsEasysingle choice

A convex mirror forms an image one-fourth the size of the object. If the object is at a distance of $0.5 m$ from the mirror, the focal length of the mirror is

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Answer:

Solution:

$\frac{f}{f - u} = \frac{1}{4} = \frac{f}{f - (- 0.5)}$

Or $4 f = f + 0.5 o r 3 f = 0.5$

Or $f = \frac{0.5}{3} m = 0.17 m$

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

⏱ 2mℹ️ Source: PYQ_2020

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