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JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Understanding +4 | -1

If the focal length of the eye piece of a
telescope is doubled, its magnifying power

(m)

will be

View answer and explanation

Correct option: C

\frac{m}{2}

Option C (

\frac{m}{2}

) is correct because magnifying power is inversely proportional to the focal length of the eyepiece.

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In refraction, light waves are bent on passing from one medium to the second medium, because, in the second medium A double convex lens is made of glass which has its refractive index 1,45 for violet rays and 1.50 for red rays. If the focal length for violet ray is

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