A body weighs 40g in air. If its volume is 10cc , in water it will weigh :
30g
40g
50g
Data insufficient
A
40g
B
Data insufficient
C
30g
D
50g
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Solution
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Loss of weight in water = bouyant force
and bouyant force = weight of water displaced by immersed volume
=ρvg
=1×10×g
=10g
Weight in water = weight in air - loss of weight in water
=40g - 10g = 30g
so option (A) is correct
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