Physics-
General
Easy
Question
A point object is placed at a distance of 20 cm from a thin plano-convex lens of focal length 15 cm. The plane surface of the lens is now silvered. The image created by the system is at :
- 60 cm to the left of the system.
- 60 cm to the right of the system.
- 12 cm to the left of the system.
- 12 cm to the right of the system
The correct answer is: 12 cm to the left of the system.
By mirror - lens combination formula
By mirror formula
v = –12 cm negative means towards left
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