Question

A jet engine works on the principle of conservation of ?

• A. Conservation of energy
• B. Conservation of momentum
• C. Conservation of mass
• D. Conservation of temperature

Answer 1

Answer:

B. Conservation of momentum

Due to the very high speed or velocity, the backward rushing gases have a large momentum. They impart an equal and opposite momentum to the jet engine due to which the jet engine moves forward with a great speed. Thus, we can say that the jet engine works on the principle of conservation of momentum.