Sun December 30, 2012 By:

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

Expert Reply
Sun December 30, 2012
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.
Sat September 23, 2017


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