Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsOptical instrumentsEasy2 minPYQ_2018

PhysicsEasysingle choice

An astronomical refracting telescope will have large angular magnification and high angular resolution, when it has an objective lens of

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Answer:

Solution:

For astronomical refracting telescope

Angular magnification is more for large focal length

Of objective lens $(M . P = \frac{f_{0}}{f_{e}})$

Resolving power $= \frac{D}{1.22 λ}$

Resolving power is high for large diameter.

So, objective lens should have large focal length (f.) and large diameter D

Stream:NEETSubject:PhysicsTopic:Geometrical OpticsSubtopic:Optical instruments

⏱ 2mℹ️ Source: PYQ_2018

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