Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Physics Current Electricity
Lightning conductor is a device used:
1
To protect the buildings from the effect of lightning
2
For communication purposes
3
For forecasting the forth coming lightning and thunder
4
More than one of the above
5
None of the above