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प्रश्न
A body weighs 20 gf in air and 18.0 gf in water. Calculate the relative density of the material of the body.
उत्तर
Weight of body in air , W1 = 20 gf
Weight of body when completely immersed in water W2 = 18 gf
R.D. of body = `W_1/(W_1 - W_2) xx "R.D. of water"`
R.D. of body = `20/(20 - 18) xx 1`
R.D. of body = 10
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