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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsOptical instrumentsMedium2 minQB

PhysicsMediumsingle choice

In telescope, if the powers of an objective and eye lens are + 1.25 D and + 20D respectively, then for relaxed vision, the length of tube and magnification will be :-

Options:

Answer:

Solution:

Ans (B)

$f_{0} = 80$ cm

$f_{e} = 5$ cm

$ℓ = f_{0} + f_{e} = 85$ cm

$m = \frac{f _{0}}{f _{e}} = 16$

Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Optical instruments

⏱ 2mℹ️ Source: QB

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