Physics, asked by parusneha, 8 months ago

the magnification of an image formed by a lens is -1. if the distance of the image from optic centre of the lens is 25cm, where is the object placed? find the nature and focal length of the lens.

Answers

Answered by amrita478
4

Answer:

The object is placed at the center of curvature.

Concave lens

Image is real inverted and of the same size

Explanation:

m= -( v/u)

Therefore=> - 1= - 25/u => u = 25

Focal length =uv/(u-v)

=25*25/(25+25)

=25*25 /50

=12.5 cm ans

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