NEET Physics Ray Optics and Optical Instruments Questions Solved


(a) State the condition under which a large magnification can be achieved in an 

      astronomical telescope.

(b) Give two reasons to explain why a reflection telescope is preferred over a

      refracting telescope.                                                                   2 marks

(a)   m=-fofe                                                                 12 marks                    

     By increasing fo/ decreasing fe                                    12 marks   


(b) Any two

     (i) No chromatic aberration.

     (ii) No spherical aberration.                 

     (iii) Mechanical advantage - low weight, easier to support.                  

     (iv) Mirrors are easy to prepare.                                    1212 marks

      (v) More economical  

Difficulty Level:

  • 82%
  • 19%
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