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NEET Sample Paper NEET Sample Test Paper-70

  • question_answer
    When a body falls in air, the resistance of air depends to a great extent on the shape of the body. Three different shapes are given. Identify the combination of air resistances which truly represents the physical situation? (The cross- sectional areas are the same).        
     
    (1) disc             (2) ball                (3) cigar shaped

    A) \[1<2<3\]                  

    B) \[2<3<1\]

    C) \[3<2<1\]                  

    D) \[3<1<2\]

    Correct Answer: C

    Solution :

    Figure 3 is streamlined, so air resistance of it will be minimum. For Figure 1 surface area is maximum, so air resistance for it is maximum. Hence, correct sequence is\[3 < 2 < 1\].


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