Question

A concave mirror forms the real image of an object which is magnified 4 times. If
object is moved 3 cm away, the magnification of the image is 3 times. The focal
length of the mirror is​

Answer 1

Answer:

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Explanation:

With a concave mirror, the magnification is found to be four times as large, when the object was 25cm from the mirror as it was with the object at 40cm from the mirror, the image being real in both the cases.