Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Science Physics Units and Dimensional Formula
A nanosecond is
1
One millionth of a second
2
One billionth of a second
3
One hundredth of a second
4
More than one of the above
5
None of the above