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The value of absolute temperature at whi...

The value of absolute temperature at which ice starts melting is

A

373 K

B

(-273) K

C

1°C

D

273 K

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A piece of ice (heat capacity= 2100Jkg^-1^@C^-1 and latent heat =3.36xx10^5Jkg^-1 ) of mass m grams is at -5^@C at atmospheric pressure. It is given 420J of heat so that the ice starts melting. Finally when the ice-water mixture is in equilibrium, it is found that 1gm of ice has melted. Assuming there is no other heat exchange in the process, the value of m is

A piece of ice (heat capacity =2100 J kg^(-1) .^(@)C^(-1) and latent heat =3.36xx10^(5) J kg^(-1) ) of mass m grams is at -5 .^(@)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 in gram is