Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2020

PhysicsEasysingle choice

A concave lens of focal length $20 cm$ product an image half in size of the real object. The distance of the real object is

Answer:

Solution:

We know that

$m = \frac{f}{f + u}$

$\frac{1}{2} = \frac{- 20}{- 20 + u} o r - 20 + u = - 40$

Or $u = - 40 + 20$ or $u = - 20 c m$

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

⏱ 2mℹ️ Source: PYQ_2020

Loading discussions...