Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsReflection at curved surfaceMedium2 minQB

PhysicsMediuminteger

A real object is kept infront of a convex mirror. Find the farthest distance (in cm) of its image from mirror. (focal length $= 7 cm$ ) :-

Answer:

Solution:

For a convex mirror with u = -x: $v = \frac{u f}{u - f} = \frac{- x f}{- x - f} = \frac{f}{1 + f / x}$

v is maximum when (1 + f/x) is minimum, i.e. $x \to \infty$ : $v_{m a x} = f = 7 cm$ .

Answer: 7

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

⏱ 2mℹ️ Source: QB

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