Physics, asked by prabhullaeb, 1 year ago

A concave lens has focal length of 25cm. At what distance should the object from the lens be placed so that it forms an image at 20cm distance from the lens?Also find the magnification produced by the lens.

Answers

Answered by Mristi
10
-100cm is the object distnce +0.2 is the magnification
prabhullaeb: Can you give the steps too...
Mristi: f= -25 CM v = -20 CM u=? nw apply formula 1/v-1/u=1/f
Mristi: n magnification=v/u
prabhullaeb: Thank you
Mristi: wlcm
Answered by shivam382002
28
The distance at which the object must be kept is -100cm. And magnification is 1|5.
Here is your answer hope it helps u.
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shivam382002: Thanks
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