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Question

Consider the following statements:
I.     Lightning occurs between the Earth and the clouds
II.   Lightning occurs between the same clouds
III.  Lightning occurs due to the discharge between charged clouds and the Earth
      Among the given statements,


  1. statements I and III are correct 

  2. only statement II is correct 

  3. only statement I is correct 

  4. statements II and III are correct 


Solution

The correct option is A

statements I and III are correct 


During lightning, negative and positive charges of the lower and upper parts of different clouds conduct each other. The negatively charged lower part of the cloud conducts with the positively charged Earth. Lightning occurs due to a discharge between different clouds. It does not occur due to a discharge between the upper and lower parts of the same cloud. Hence, only statement II is incorrect.

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