9th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    Which two conditions are essential for work to be done according to the concept of work in physics?
    Condition 1: A force should act on a object.
    Condition 2: The object should be displaced.
    Condition 3. The object should be displaced only in horizontal direction.
    Condition 4. The magnitude of the force must be more than 1 N.

    A) Conditions 1 and 2                                 

    B) Conditions 1 and 3

    C) Conditions 1 and 4

    D) Conditions 2 and 4

    E) None of these

    Correct Answer: A

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