A concave mirror has a focal length of 25 cm .At which of the following distance should a person hold his face from this concave mirror so that it may act as a shaving mirror

Asked by  | 30th Dec, 2012, 07:21: PM

Expert Answer:

The person should hold the mirror close to the face, so that it lies within the focus of the mirror. So, the face should be kept withing 25 cm from the mirror.

Answered by  | 30th Dec, 2012, 08:13: PM

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