## 1. When an object is placed at a distance of 25 cm from a mirror, the magnification is m . But the magnification becomes m2, when

Question

1. When an object is placed at a distance of 25 cm from

a mirror, the magnification is m . But the

magnification becomes m2, when the object is

moved 15 cm farther away with respect to the

mi

earlier position. If = 4, then find the focal

—

m2

length of the mirror and what type of mirror it is?

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2021-10-27T02:10:51+00:00
2021-10-27T02:10:51+00:00 1 Answer
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## Answers ( )

Answer:When an object is placed at a distance of 25 cm from a mirror, the magnification is m1. The object is moved 15cm farther away with respect to the earlier position, and the magnification becomes m2. If m1/m2=4 , then calculate the focal length of the mirror. The negative sign shows that the mirror is concave.