Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsOptical instrumentsEasy2 minPYQ_2020

PhysicsEasysingle choice

The length of a telescope, for which it is known that it has an objective lens of focal length $144 c m$ and an eye piece of focal length $6 cm$ , is

Answer:

Solution:

The length of a telescope is

$l = f_{0} + f_{e}$

Given,

$f_{0} = 144 c m = 1.44 m, f_{e} = 6.0 c m = 0.06 m$
$l = 1.44 + 0.06 = 1.5 m$

Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Optical instruments

⏱ 2mℹ️ Source: PYQ_2020

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