Question

A convex lens forms a real and inverted image of a needle at a distance of 30 cm from it. Where is the

needle placed in front of the convex lens if the image is equal to the size of the object? Also, find the power of

the lens. ​

Answer 1

Answer:

f is the focal length of the lens. It is said that when the needle is placed in front of the lens, a real and inverted image is formed and the size of the image is equal to the size of the needle. The magnification is defined as the ratio of the size of the image to the size of the object....

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