12th Class Physics Sample Paper Physics Sample Paper-10

  • question_answer
    Two persons are standing under a tree and another person near them is inside a car. They were arguing about going out for a movie or to the beach, when a lightning struck the tree with some force. The person inside the car notices his friends standing under the tree are affected by lightning, he comes out and takes them to the nearby hospital.
    (i) Why the person in the car was not affected by lightning?
    (ii) What quality to you find the person inside the car?
    (iii) Explain, the process that takes place during lightning.


    (i) Due to electrostatic shielding, the person in the car was not affected (electric field inside the metallic body is zero).
    (ii) Helping others, taking a quick decision as to what is to be done, in case, he is unaware or unable to do on his own.
    (iii) Lightning i's a massive electrostatic discharge between electrically charged regions within the clouds or between a cloud and the earth's surface.

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