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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2019

PhysicsEasysingle choice

The equi-convex lens has a focal length ‘ $f$ ’. If the lens is cut along the line perpendicular to principal axis and passing through the pole, what will be the focal length of any half part?

Options:

Answer:

Solution:

$\frac{1}{f} = (n - 1) (\frac{2}{R})$

$\Rightarrow \frac{1}{f'} = (n - 1) (\frac{1}{R})$
$∴ f^{'} = 2 f$

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

⏱ 2mℹ️ Source: PYQ_2019

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