Q 1639556412.     A piece of ice (heat capacity `=2100Jkg^{-1}text()^oC^{-1}` and latent heat `=3.36\times 10^{5}Jkg^{-1})` of mass m grams is at `-5^{o}C ` at atmospheric pressure. It is given 420 J of heat so that the ice starts melting. Finally when the ice-water mixture is in equilibrium, it is found that 1 gm of ice has melted. Assuming there is no other heat exchange in the process, the value of m is

JEE 2010 ADVANCED Paper 1

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Heat = latent heat + Heat required to raise temp

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