The focal length of a concave mirror is 50 cm. To obtain an inverted image two times the size of the object the object should be placed at
Q. The focal length of a concave mirror is 50 cm. To obtain an inverted image two times the size of the object the object should be placed at :
A) 50 cm
B) 63 cm
C) 72 cm
D) 75 cm
Answer: 75 cm
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