a concave lens forms the image 14 the size of the object which is placed at a distance of 40cm in front of it find its focal length​

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DaviszoowlHL DaviszoowlHL Tuteehub forum best answer Best Answer 1 year ago

Since FOCAL LENGTH of CONCAVE mirror given is 20cm L. Object is at 40cm distance which means it is at centre of CURVATURE. hence, image will be formed of same size and at centre focus only but real and inverted.


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