The water equivalent of a copper colorimeter is 4.5g. If specific heat of copper is 0.09 cal /g/∘C, then
1) Mass of the calorimeter is 0.5kg
2) Thermal capacity of the calorimeter is 4.5 cal/ C
3)The heat required to raise the temperature of the calorimeter by 8∘C will be 36 cal.
4) Heat required to melt 15 gm of ice placed in the calorimeter will be 1200 cal
Choose the correct option from below