Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2020

PhysicsEasysingle choice

The graph shows how the magnification $m$ produced by a thin lens varies with image distance $v$ . The focal length of the lens used is

Answer:

Solution:

For a thin lens,
$|m| = |1 - \frac{v}{f}|$
From the graph, slope of the line $m = \frac{1}{f}$
$\frac{c}{b} = \frac{1}{f}$
$f = \frac{b}{c}$

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

⏱ 2mℹ️ Source: PYQ_2020

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