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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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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? 

संक्षेप में उत्तर
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उत्तर

Let us name the mirrors M1, M2 and Mas 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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अध्याय 11: Reflection of Light - Exercise [पृष्ठ १२७]

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बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
अध्याय 11 Reflection of Light
Exercise | Q 6. | पृष्ठ १२७

संबंधित प्रश्न

A student focused the Sun rays using an optical device 'X' on a screen S as shown.

From this it may be concluded that the device 'X' is a (select the correct option)

(A) Convex lens of focal length 10 cm.

(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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(b) real principal focus.


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All the distances are measured from the .......... of a spherical mirror. 


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(i) Pole

(ii) Centre of curvature

(iii) Radius of curvature

(iv) Principal axis


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