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प्रश्न
Three mirrors are created from a single sphere. Which of the following - pole, centre of curvature, radius of curvature, principal axis - will be common to them and which will not be common?

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उत्तर
Let us name the mirrors M1, M2 and M3 as shown below.

From the figure, we see that
- pole (P) is not common.
- centre of curvature (C) is common.
- principal axis (PA) is not common.
- radius of curvature (R) is common. The radius of curvature is the radius of the sphere. In the given figure, the length CP is the same for all mirrors.
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संबंधित प्रश्न
A student focused the Sun rays using an optical device 'X' on a screen S as shown.

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(B) Convex lens of radius of curvature 20 cm.
(C) Convex lens of focal length 20 cm.
(D) Concave mirror of focal length 20 cm.
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(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
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