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61. When a body falls in air, the resistance of air depends to a great extent on the shape of the body, 3 different shapes are given. Identify the combination of air resistances which truly represents the physical situation. (The cross sectional areas are the same).

(a)  1 < 2 < 3                             (b)  2 < 3 < 1

(c)   3 < 2 < 1                             (d)  3 < 1 < 2

Explanation- (c) A stream lined body has less resistance due to air.

(15)

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