Physics, asked by hema701, 8 months ago

write the characteristic of the image formed by a convex lens having focal length of 25 cm when an object is kept at a distance of 50cm and 75 cm

Answers

Answered by veenabais

Answer:

The focal length of the convex lens is 25 cm.

When the object is kept at a distance of 50 cm from the lens, the distance is equal to twice the focal length. Hence, the image would be real and inverted and would be formed at the same distance from the lens as the object but on the other side of the lens.

When the object is kept at a distance of 75 cm from the lens, the distance is greater than the focal length. Hence, the image would be real and inverted and would be formed on the .other side of the lens.

The distance of the image can be calculated from the lens formula 1v−1u=1f.

⇒v=ufu+f=−75×25−75+25=37.5 cm.

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