mechanics (mass, force, acceleration, work, energy, momentum, velocity) - Category wise Question and Answer Practice Test with Solutions

Question : 36

Which one of the following statements regarding artificial satellite of the earth is incorrect ?

a) The period of revolution is large if the radius of its orbit is large

b) A minimum velocity of 8 km/sec is required by a satellite to orbit quite close to the earth

c) The orbital velocity depends on the mass of the satelllite

d) The height of a geostationary satellite is about 36000 km from earth

Question : 37

A hole is drilled through the earth along the diameter and a stone is dropped into it. When the stone is at the centre of earth, it possesses

a) acceleration

b) mass

c) weight

d) potential energy

Question : 38

Consider the following features of newer models of motor cars:

1. Radial tyres
2. Streamlined body
3. Multipoint fuel injection
4. Catalytic converter with exhaust

a) 2, 3 and 4

b) 1 and 2

c) 2 and 3

d) 1, 3 and 4