Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2020

PhysicsEasysingle choice

A convex lens of focal length $10 cm$ and image formed by it, is at least distance of distinct vision then the magnifying power is

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Answer:

Solution:

The coverging lens used for magnification is called simple microscope or a magnifier.

When image is formed at $D$ , the least distance of distinct vision, then magnifying power

$M = 1 + \frac{D}{f}$

Given, $D$ = 25 cm, $f$ = 10 cm

$∴ M = 1 + \frac{25}{10} = 1 + 2.5 = 3.5$

Subject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at curved surface/Lens

⏱ 2mℹ️ Source: PYQ_2020

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