Question

25. Which of the following pair have same
unit?
(a) Heat and Specific heat
(b) Thermal capacity and Water
equivalent
(c) Specific heat and Thermal capacity
(d) Heat and Work​

Answer 1

The correct option is d) Heat and Work.

• SI unit of heat and work is the joule and calorie because they both express the energy of the system or object.
• Specific heat is the heat absorbed by the object per unit mass. So, the SI unit of specific heat is joule/kg.
• The SI unit of water equivalent is Kg whereas the SI unit of Thermal capacity is joule/kelvin.
• The relation between specific heat and water equivalent is: Water equivalent = mass of body × specific heat