Subject :NSO Class : Class 9
An aeroplane pilot hears a slow beat from the two engines of his plane. He increases the speed of the right engine and now hears a slower beat. What should the pilot now do, to eliminate the beat?
AIncrease the speed of the left engine
BDecrease the speed of the right engine
CIncrease the speed of both engines
DIncrease the speed of the right engine
Ans 1:
Class : Class 9
Ans 2:
Class : Class 10