Start Free Mock LoginAlready registered? Login here

Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2020

PhysicsEasysingle choice

A plano-concave lens is made up of a glass of refractive index $1.5$ and the radius of the curvature of its curved face is $100 cm$ . What is the power of the lens?

Options:

Answer:

Solution:

By using lens maker formula. $P o w e r = \frac{1}{f o c a l l e n g t h}$

$P = \frac{1}{f} = (μ - 1) (\frac{1}{R_{1}} - \frac{1}{R_{2}})$

$= (1.5 - 1) (\frac{1}{\infty} - \frac{1}{1})$

$= 0.5 (- 1)$

$P = - 0.5 D$

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

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...