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An object 3 cm high is placed 20 cm from convex lens of focal length 12 cm. Find the nature, position and height of the image.

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asked Jan 20, 2018 in Physics by Kundan kumar (49,132 points) ● 34 ● 379 ● 1011

An object 3 cm high is placed 20 cm from convex lens of focal length 12 cm. Find the nature, position and height of the image.

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+1 vote
answered Jan 20, 2018 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 21
selected Jan 20, 2018 by Kundan kumar
 
Best answer

Since m is negative and greater than 1, the image is real, inverted and larger than the object.

Thus the image is 30cm from the convex lens, located on the other side of the lens. It is real, inverted and 4.5cm high.

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