Q. 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) Figure 3 is stream lined, 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.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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