Physics
Grade-10
Easy
Question
The image of an object located at a distance of 25 cm towards the left of a concave lens is formed at a distance of 5 cm at the same side of the lens. The magnification produced by the lens is ____.
- 0.2
- -0.2
- 0.25
- -0.25
Hint:
For a concave lens, the magnification m= v/u, where v= distance of the object , u= distance of the image
The correct answer is: 0.25
The image of an object located at a distance of 25 cm towards the left of a concave lens is formed at a distance of 5 cm at the same side of the lens. The magnification produced by the lens is 5.
- The magnification of the concave lens is m= v/u
- Given, the distance of the object is 25 cm and the distance of the image is 5 cm.
- The magnification m= 25/5= 5
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