Question

The technonlogy related with the Bernoulli's principle is used in

• A. hydroelectric power
• B. rocket propulsion
• C. aeroplane
• D. steam engine
• E. electron microscope

Answer 1

The Correct Option is C

Bernoulli's principle states that for an incompressible, non-viscous fluid, the pressure is lower where the fluid velocity is higher. This principle plays a crucial role in understanding the lift generated by an aeroplane wing. The shape of the wing causes the air to move faster over the top surface, which leads to lower pressure on top of the wing compared to the bottom. This pressure difference creates the upward lift force that allows the aeroplane to fly.
Therefore, the technology related to Bernoulli's principle is used in aeroplanes.

The correct option is (C) : aeroplane

Answer 2

Bernoulli's principle explains that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure. This principle is applied in the working of an aeroplane. 

In an aeroplane, the wings are designed such that air moves faster over the curved upper surface and slower under the flatter bottom surface. This creates a pressure difference — lower pressure on top and higher pressure below — which results in an upward lift force. 

Correct answer: aeroplane