a concave mirror having radius of curvature 40 cm is placed in front of an illuminated source at a distance of 30cm if.find the location of the image
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r = -40 cm
f = r/2 = -40/2 = -20 cm
u= -30 cm
1/v + 1/u = 1/f
1/v - 1/30 = -1/20
1/v = -1/20+ 1/30
1/v= -3=2/60
1/v = -1/60
v = -60 i.e. beyond C or 2F
f = r/2 = -40/2 = -20 cm
u= -30 cm
1/v + 1/u = 1/f
1/v - 1/30 = -1/20
1/v = -1/20+ 1/30
1/v= -3=2/60
1/v = -1/60
v = -60 i.e. beyond C or 2F
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1
Answer:
60 cm from the mirror on the same side of the object
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