Question

an object is placed at a distance of 10 cm on the principal axis of convex lens whose focal length his less than 10th cm then the image is observed at the distance of 30 cm from the lens find the nature and magnification of image​

Answer 1

Answer:

20

Explanation:

as the radius is half of the focal 30-10 =20

Answer 2

The magnification is -3 and nature of the image is inverted.

Explanation:

Given object distance, u = -10 cm and image distance, v = 30 cm.

The magnification for the lens is given as

$m=\frac{v}{u}$

Substitute the given values, we get

$m=\frac{30 \ cm}{-10\ cm}$

m = -3 .

As the magnification is negative then the image is inverted as compared to the object (real image).

Thus, the magnification is -3 and nature of the image is inverted.

#Learn More : Magnification

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