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NEET Sample Paper NEET Sample Test Paper-57

  • question_answer
    A particle is displaced from a position \[(2\hat{i}-\hat{j}+\hat{k})\] to another position under the action of the force\[(2\hat{i}-\hat{j}+\hat{k})\]. The work done by the force in an arbitrary unit is:

    A) 8                                 

    B) 10      

    C) 12                                

    D) 16

    Correct Answer: A

    Solution :

    [a] Work = Force displacement \[=(2\hat{i}+\hat{j}-\hat{k}\text{)}\,\text{(}\hat{i}+3\hat{j}-3\hat{k})\] \[=2+3+3=8\] Joule


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