The focal length of a concave mirror is 4cm
An object 1.5cm high is placed 12cm infront of the mirror
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Answer:
Given ,
f = 4 cm
R = 2f
= 8 cm
v = 12 cm
u = ?
1/f = 1/v + 1/u
1/4 = 1/12 + 1/u
1/u = 1/4 - 1/12
= 3-1 / 12
= 2/12
= 1/6
u = 6 cm
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