NEET Physics Ray Optics and Optical Instruments Questions Solved


The magnifying power of a telescope is 9. When it is adjusted for parallel rays the distance between the objective and eyepiece is 20cm. The focal length of lenses are 

(a) 10cm,10cm

(b) 15cm,5cm

(c) 18cm,2cm

(d) 11cm,9cm

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