Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2011

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A convex lens of focal length $30 cm$ produces 5 times magnified real image of an object. What is the object distance ?

Answer:

Solution:

Hints: $\frac{1}{5 u} - (\frac{1}{- u}) = \frac{1}{30}$ $\frac{1}{5 u} + \frac{1}{u} = \frac{1}{30}, \frac{5 + 1}{5 u} = \frac{1}{30} u = 36 cm .$

Stream:WBJEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at curved surface/Lens

⏱ 2mℹ️ Source: PYQ_2011

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