Which of the following statements are correct regarding unsteady heat conduction.
- \(\frac{{\partial T}}{{\partial t}} \ne 0\)
- \(\frac{{\partial T}}{{\partial t}} = 0\)
- There is accumulation (storage) of energy in system.
- There is no accumulation (storage) of energy in system.
1
1 and 4
2
2 and 3
3
1 and 3
4
Only 1