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Easy
Question
Figure shows an arrangement of an equiconvex lens ( f=20 cm in air) and a concave mirror (R=80 cm). A point object ' O ' is placed on the principal axis at a distance 40 cm from the lens such that the final image is also formed at the position of object. Find d.
- 20 cm
- 30 cm
- 40 cm
- 50 cm
The correct answer is: 30 cm
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