KCET2017PhysicsMotion in One Dimension
The S.I. unit of specific heat capacity is
Options
- A( J mol ⁻¹ ~K ⁻¹ )
- B( J k g⁻¹ K⁻¹ )
- C( J K⁻¹ )
- DJ ( k g⁻¹ )
Correct answer
B. ( J k g⁻¹ K⁻¹ )
Step-by-step solution
Specific heat is the amount of heat required to raise the temperature of one kg of mass by ( 1 kelvin ). The ( SI ) unit of specific heat capacity is ( J k g⁻¹ K⁻¹ ). We know that ( Q = Cm T ) where ( Q ) is heat; ( C ) is specific heat; ( m ) is mass (in ( kg ) ); ( T ) is change in temperature (in kelvin) ( C= Q m T ~T ) Therefore, SI unit of specific heat capacity is ( J k g⁻¹ K⁻¹ )