ECAT Pre Computer Science Chapter 3 online mcq test with answers for Physics chapter 3 (Motion and Force)

ECAT Physics Chapter 3 Motion and Force Online Test

Sr. #	Questions	Answers Choice
1	One KWh is equal to:	3.6 x 10<sup>2</sup>J 3.6 KJ 3.6 x 10<sup>1</sup>KJ 3.6 MJ
2	The velocity given to a body to go out of the influence of earth's gravity is known as:	Terminal velocity Orbital velocity Escape velocity None of these
3	When two protons are brought closer potential energy of both of them:	Increases Decreases Remains same None of these
4	A body of weight 1 N has a kinetic energy of 1 joule when its speed is:	1.46 m sec<sup>-1</sup> 2.44 m sec<sup>-1</sup> 3.42 m sec<sup>-1</sup> 4.43 m sec<sup>-1</sup>
5	Tick the conservation force:	Tension in a string Air resistance string Elastic spring force Frictional force
6	Work done along a closed path in a gravitational field is:	Maximum Minimum Zero Unity
7	A body whose momentum is constant must have constant	Acceleration Velocity Force None of these
8	Swimming is based on the principle of	Newton's 1st law Newton's 2nd law Newton's 3rd law All
9	If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)	mg m (g+a) m (g - a) 0
10	A body of mass 1.0 kg is falling with an acceleration of 10 m/s². Its apparent weight will be (g=10 m/s²)	1.0 kg wt 2.0 kg wt 0.5 kg wt Zero
11	When a body is moving on a surface, the force of friction is called	Static friction Dynamic friction Limiting friction Rolling friction
12	A railway engine (mass 10⁴kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is	3,600 N 7,200 N 10,000 N 100,000 N
13	When a horse pulls a cart, the force that makes the horse run forward is the force exerted by	The horse on the ground The horse on the cart The ground on the horse The ground on the cart
14	When a bicycle is in motion, the frictional forces exerted by the ground are	In the forward direction on both the wheels In the backward direction on both the wheels In the forward direction on the front wheel and the backward direction on the rear wheel In the backward direction on the front wheel and the forward direction on the rear wheel
15	In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is	Mg 1/2 Mg Zero 2 Mg

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