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 |
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a) |
12 |
b) |
30 |
c) |
50 |
d) |
60 |
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 |
(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