in a concave mirror if 9cm and 4cm are the distance
of object and its image respectivly from the focus then
the
focul
length of mirror is
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in a concave mirror if 9cm and 4cm are the distance
of object and its image respectivly from the focus then
the
focul
length of mirror is
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Answer:
the focal length of the concave mirror is -2. 77 cm.