Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2020

PhysicsEasysingle choice

Which of the following statements is correct?

Answer:

Solution:

Focal length of lens in a medium is given by

$\frac{1}{f} = (μ_{rel} - 1) (\frac{1}{R_{1}} - \frac{1}{R_{2}})$

The relative refractive index of a medium is more in air and less in water

${(μ_{rel})}_{a i r} > {(μ_{rel})}_{w a t e r}$

$∴ f_{a i r} < f_{w a t e r}$

Focal length of a mirror does not depend on medium.

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

⏱ 2mℹ️ Source: PYQ_2020

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