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प्रश्न
The density of iron is 7.8 x 103 kg m-3. What is its relative density?
उत्तर
Density of iron = `7.8 xx 10^3` kgm-3
Density of iron in C.G.S = 7.8 gcm-3
R.D. = Density of C.G.S. (without unit) = 7.8
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