Question

an object is placed at distance of 2f in front of concave mirror of focal length f . the magnification produced is​

Answer 1

Answer:

The distance of the plane mirror from the concave mirror equals f . The distance ... For a concave mirror, when object is at 2f. image is formed at 2f. Hence ... Effective Focal Length of Lens.

Explanation:

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Answer 2

Answer:

the distance of the plane mirror from the concave mirror equals f. the distance for a concave mirror, when object is at 2f.image is formed at 2f,hence... effective focal lengths of lens