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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2020

PhysicsEasysingle choice

The distance between the object and its real image from the convex lens is $60 c m$ and the height of image is two times the height of object. The focal length of the lens is

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Answer:

Solution:

$\frac{D - U}{- U} = - 2$

$D - U = 2 U$

$D = 3 U$

$U = 20$

$m = \frac{F}{F - 20}$

$- 2 = \frac{F}{F - 20}$

$- 2 F + 40 = F$

$F = \frac{40}{3} c m$

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

⏱ 2mℹ️ Source: PYQ_2020

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