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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsReflection at curved surfaceMedium2 minQB

PhysicsMediummultiple choice

(One or more options correct) A particle is moving towards a concave mirror of focal length 30 cm along its axis with a constant speed of 4 cm/sec.

Options:(select one or more)

Answer:

A, B, C

Solution:

$V_{i} = - \frac{f ^{2}}{( u - f ) ^{2}} V_{o} = - \frac{900}{( 90 - 30 ) ^{2}} \times 4 = - 1$ cm/sec; so speed of image w.r.t. particle $= 4 + 1 = 5$ cm/sec.

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

⏱ 2mℹ️ Source: QB

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