Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Physics Work Power and Energy Conservation of Mechanical Energy
Work energy theorem is valid-
1
only in the presence of an external force
2
only in the presence of an internal force
3
for all type of forces
4
More than one of the above
5
None of the above