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To avoid spherical aberration, quality r...

To avoid spherical aberration, quality reflecting telescopes use mirrors whose cross-sectional shapes are

A

prismatic

B

elliptic

C

parabolic

D

spherical

Text Solution

Verified by Experts

The correct Answer is:
C
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Explore conceptually related problems

In a convex spherical mirror, reflection of light takes place at :

(a) List some advantanges of a reflecting telescope, especially for high resolution astronomy. (b) A reflecting type telescope has a large mirror for its objective with radius of curvature equal to 80 cm . What is the magnifying power of telescope if eye piece used has a focal length of 1.6 cm ?

Assertion : A reflecting type telescope is preferred over refracting type in astronomy. Reason : Reflecting type telescope is free from chromatic aberration and parabolic surfaces are used to avoid spherical aberration.

Uses Of Spherical Mirrors

Reflection Of Light|Spherical Mirrors

Spherical wave fronts shown in figure,strike a plane mirror .reflected

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