Question

Which of the following denotes the correct relation of air with pressure?



(a) Higher the speed of wind, lower is the air pressure

(b) Lower the pressure of air, lower is the speed of air

(c) Lower the speed of wind, lower is the mass of air

(d) Higher the mass of air, higher is the air pressure

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Answer 1

Answer:

d) higher the mass of air, higher is the air pressure

Answer 2

Answer:

The correct option is (a) Higher the speed of wind, lower is the air pressure.

Explanation:

• We know that the pressure of air and its velocity are inversely proportional to one other.
• When the pressure rises, the velocity decreases. This is because the molecules are close together and cannot accelerate easily.
• When the pressure decreases, the velocity rises. This is because the molecules are far apart and can accelerate with ease.