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  • The objective lenses of two telescopes have the same apertures but their focal lengths are in the ratio 1: 2. Compare the resolving powers of the two telescopes.      

The objective lenses of two telescopes have the same apertures but their focal lengths are in the ratio 1: 2. Compare the resolving powers of the two telescopes.

 

 

 

 
 
 
 
 

Answers (1)

Resolving power \propto\; \frac{a}{\lambda }
where a is aperture
\lambda is the wavelength
Resolving power is independent of focal length, therefore both telescope will have the same resolving power.

Posted by

Safeer PP

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