PHYSICS ONE LINER SET 17

PHYSICS ONE LINER SET 17

1. On which principle does Rocket work? Conservation of momentum
 
2. If the mass of the pendulum is doubled, what will its the time period? Remains same
 
3. Wireless communication is reflected back to the earth’s surface by the which
zone?
Ionsphere
 
4. Which are waves moving from a sitar to a listener in air? Longitudinal
progressive
 
5. By whom are the planets are kept in motion in their respective orbits? Gravitation and centrifugal force
 
6. The hydraulic brakes used in automobiles is a direct application of which law? Pascal’s law
 
7. In which transmission are sound and video signals transmitted simultaneously? T.V. Transmission
 
8. Why is used as coolant in the radiator of a car engine? Because it has high
specific heat
 
9. In India, who was the first to put forward the theory that the earth revolves round the sun?
Aryabhatta
 
10. A metal sheet with circular hole is heated. what change will be in the hole? It will Expand