Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Physics Laws and Principles
Mirrors are used in ammeters and voltmeters to avoid
1
Parallax error
2
Constant error
3
Random error
4
More than one of the above
5
None of the above