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A luminous object is placed at a distance of  from the convex lens of focal length . On the other side of the lens, at what distance from the lens a convex mirror of radius of curvature  be placed in order to have an upright image of the object coincident with it

a)

12

b)

30

c)

50

d)

60



Question ID - 152762 | SaraNextGen Top Answer

A luminous object is placed at a distance of  from the convex lens of focal length . On the other side of the lens, at what distance from the lens a convex mirror of radius of curvature  be placed in order to have an upright image of the object coincident with it

a)

12

b)

30

c)

50

d)

60

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

For lens  hence by using

The final image will coincide the object, if light ray falls normally on convex mirror as shown. From figure it is seen clear that separation between lens and mirror is

127 votes


127