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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