draw a ray diagram to show the image formation in refraccting type astronomical telescope in the normal adjusment  when image is formed at infinity.derive an expression the aperture of objective lens and why?
 

Asked by mahamood.iphone | 14th Dec, 2015, 09:53: PM

Expert Answer:

Dear mahamood.iphone@gmail.com

Thanks for asking us a question in Ask the Expert section of TopperLearning.com.
The derivation that you are asking is derived as is in the NCERT textbook XII Part II on page numbers 341 and 342
 and the expression for the aperture of objective lens in same textbook on page number 372 and 373.
 
You can refer the textbook for your query. If however, you have any conceptual doubt regarding the same then you can post your query.

Regards

Topperlearning Team.

Answered by Priyanka Kumbhar | 16th Dec, 2015, 10:59: AM