Question

how is the loss of heat due to radiation minimised in a Calorimeter​

Answer 1

Heat loss due to conduction is prevented by placing the calorimeter box in a well lagged vessel using wool or cork material. Heat loss due to convection is prevented by placing a lid on the box. Heat loss due to radiation is minimized by polishing the box in order to smoothen

Answer 2

Answer:

Also, avoid having too large temperature differences between the calorimeter and its surroundings. ... o Use of a highly polished calorimeter reduces heat loss by radiation. o Use of a lid on the calorimeter reduces heat losses by convection and evaporation.