Physics
Grade-10
Easy
Question
An object of height 2 m is located at a distance of 50 cm from a convex lens of focal length 25 cm. The image is of height ____ m.
Hint:
For a convex lens, magnification is the ratio between object distance and image distance.
The correct answer is: 2
An object of height 2 m is located at a distance of 50 cm from a convex lens of focal length 25 cm. The image is of height 2 m.
- Given, the object's height is 2m, the distance of the object is 50cm, and the focal length is 25cm.
- The focal length is the point where the image falls in the principle axis.
- As the focal length is 50 m, the image falls at 50cm from the pole.
- Thus, magnification m= v/u= 50/25= 2cm.
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