Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Physics Work Power Energy
Work done can be ______.
I. zero
II. positive
III. Negative
1
I, II and III
2
Only II and III
3
Only I and II
4
More than one of the above
5
None of the above