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Q.

Is it true that if the building height is 8 metres, then we require lightning conductors of 8 -metre length to prevent buildings from lightning?


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a

True

b

False  

answer is B.

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Detailed Solution

The above statement is false.
A lightning conductor is a metallic rod bigger than the building installed in the walls of the building during its construction. The upper end is kept out in the air, and the lower end is buried deep in the ground. The rod provides an easy path for transferring electric charge to the ground.
Therefore the correct statement would be if the building height is 8 metres, then we require lightning conductors more than 8-meter length to prevent buildings from lightning.
 
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