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Question

What measures are taken to reduce fluid friction in aeroplanes?

A
Optimum speed is maintained with respect to the air
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B
Metals are choosen in a way to make the aeroplane lighter with smoother surface
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C
Streamlined body inspired by birds
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D
All of the above
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Solution

The correct option is C All of the above
It is very important to minimize the fluid friction for airplanes because more friction will produce more heat, which may harm the plane. Thus, various measures are taken to reduce friction. An optimum speed is maintained and the body structure of the plane is more streamlined so that it can cut through the air with minimum friction. Also, such metals are chosen to make the body of the airplane, which are light, strong, and able to form a smooth surface. This smooth surface ensures lesser friction.

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