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प्रश्न
The mass of a lead piece is 115 g. When it is immersed into a measuring cylinder, the water level rises from 20 ml mark to 30 ml mark ,
Find the density of the lead in kg m-3.
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उत्तर
Given: M = 115 g
V1 = 20 ml
V2 = 30 ml
Density of lead piece d = `(M)/(V)`
= `115/(10 cm^3)`
= 11.5 g cm−3 ...(since 1 g cm−3 = 1000 kg−3)
= 11.5 × 1000
= 11500 kg m−3
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