A CONCAVE MIRROR PRODUCES A REAL IMAGE 10 MM TALL , OF AN OBJECT 2.5 MM TALL PLACED AT 5 CM FROM THE MIRROR. CLACULATE FOCAL LENGTH OF THE MIRROR AND THE POSITION OF IMAGE. :)
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Explanation:
Height of image = -10 mm= -1 cm
height of object = 2.5 mm = 0.25 cm
u = -5 cm
f = ?
m=-v/u=Hi/Ho
v/5=1/0.25
v=20 cm
1/v+1/u=1/f
f=-4 cm
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