A calorimeter takes `200 cal` of heat to rise its temperature through `10^@C`. Its water equivalent in `gm` is

A calorimeter takes 400 cal of heat to rise its temperature through 10C .Its water equivalent in gm is N times10 then the value of N is

A calorimeter contains 400 gm of water at temperature of 5^@C . Then, 200 gm of water at a temperature of +10^@C and 400 gm of ice at temp. of -60^@C are added. Specific heat of ice =0.5 cal/gm. At equilibrium

50 gm of copper is heated to increase its temperature by 10^(@)C. If the same quantity of heat is given to 10 gm of water, the rise in its temperature is (Specific heat of copper =420 Joule-kg^(-1)@C^(-1)

75 gm of copper is heated to increase its temperature by 10^@ C . If the same quantity of heat is given to 'm' gm of water, to have same rise in temperature is (specific heat of copper = 420 J//Kg-^@ C ).

A calorimeter contains 10 g of water at 20^(@)C . The temperature falls to 15^(@)C in 10 min. When calorimeter contains 20 g of water at 20^(@)C , it takes 15 min for the temperature to becomes 15^(@)C . The water equivalent of the calorimeter is