Answers

2016-03-29T20:59:53+05:30
Relative density is ratio of density of a substance to the density of water
cork floats because it has density less than that of water
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2016-03-29T21:03:51+05:30
(i) Relative density of a substance is the ratio of its density to that of water.
    It has no unit

    Relative Density = Density of sub./ density of water.

(ii) The cork will float bcoz density of cork is less than that of water..
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