Rhea did some preliminary experiment with the mirrors and found out that when the object is placed at a distance of 10 cm from the concave mirror (M₂). If in her experiment with M2 she found a real image at 10 cm from the mirror, what is the
focal length of the mirror ?
(a) 72 cm
(b) 12 cm
(c) 8 cm d 6cm
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Answer:
b 12 cm is the correct answer hope it helps
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