A small object is placed 50 cm to the left of a thin convex lens of focal length 30 cm. A convex spherical mirror of radius of curvature 100 cm is placed to the right of the lens at a distance of 50 cm. The mirror is tilted such that the axis of the mirror is at an angle 
= 30° to the axis of the lens, as shown in the figure.
If the origin of the coordinate system is taken to be at the centre of the lens, the coordinates (in cm) of the point (x, y) at which the image is formed are
)
)
, 25)
Text Solution
Verified by ExpertsA
First Image I 1 from the lens will be formed at 75 cm to the right of the lens.
Taking the mirror to be straight, the image I 2 after reflection will be formed at 50 cm to the left of the mirror.
On rotation of mirror by 30 the final image is I 3 .
So x = 50-50 cos 60° = 25 cm.
And y= 50 sin 60° =25 
cm
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