UPSC General Studies Sample Paper General Studies Sample Paper-3

  • question_answer
    Consider the following statements with reference to lightning.
    1. During storms, negative and positive charges meet in the clouds, producing streaks of bright light and sound. The process is called an electric discharge.
    2. During lightning it is not safe to use mobile phone, but it is safe to use a landline.
    3. Carrying umbrella is not a good idea at all during thunderstorms.
    Which of the statements given above are correct?

    A)  1 and 2           

    B)  2 and 3

    C)  1 and 3           

    D)  All of these

    Correct Answer: C

    Solution :

    [c] Lightning is sudden electrostatic discharge during electric storm between electrically charged region of cloud, between that cloud and other cloud or between a cloud and the ground. The charge region, within the atmosphere temporarily equalize themselves through a lightning flash. Lightning can strike telephone cords, electrical wires and metal pipes. During a thunderstorm contact with these should be avoided. It is safer to use mobile phones and cordless phones. However, it is not wise to call up a person who is receiving your phone through a wired phone. Except, Statement 2 all the other statements are correct.

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