Grand Test session 3


Physics mcqs 






1.The shortest distance between two points is called?
A.Accelaration
B.velocity
C.Speed
D.Displacement

2.Two cars are moving in opposite direction with speed v...what is the magnitude of their relative velocity?
A.0
B.V
C.V/2
D.2V

3.A body can have constant velocity when it follows?
A.Elliptical path
B.parabolic path
C.Circular path 
D.Rectilinear path

4.If the slope of a velocity time graph gradually decreases, then the body is said to be moving with?
A.positive acceleration 
B.Negative acceleration 
C.Uniform velocity 
D.None of these


5.If the force acting on a body is doubled, then acceleration becomes?
A.Half
B.Doubled
C.one fourth 
D.constant
6.Which law of motion defines force?
A.1st law
B.2nd law
C.3rd law
D.All of these

7.When force of 1N is applied on a body of mass 100g then the acceleration would be?
A.5ms/2
B.0.5ms/2
C.10ms/2


8.A mass of 10kg moves with an acceleration of 10ms/2 the force on it is?
A.5N
B.100N
C.50N
D.25N

9.A gun after firing recoils due to 
A.Conservation of energy 
B.Conservation of momentum 
C.Backward thrust of the gases produced 
D.Newton first law of motion


10.The average force necessary to stop a hammer with 25Ns momentum in 0.05s expressed in N is
A.500
B.125
C.50
D.25

11.In which of the following cases forces may not be required to keep the 
A.particle going in a circle 
B.The momentum of the particle constant 
C.Particle going on a straight line
D.Acceleration of the particle constant

12.The collisions between the two bodies is elastic if bodies are 
A.Solid and soft
B.solid and hard
C.hard and elastic
D.soft and elastic


13.At maximum height on the trajectory which of projectile becomes zero?
A.accelaration 
B.vertical velocity 
C.Velocity
D.horizontal velocity

14.The retardation is defined as?
A.Increase in velocity per unit time
B.Decrease in velocity per unit time
C.Decrease in speed per unit time
D.increase in speed per unit time

15.If an object is moving with constant velocity of 20ms/s towards north then it's acceleration will be?
A.5ms/2
B.10ms/2
C.9ms/2
D.0ms/2

16. The product of force and time is equal to
A)angular momentum
B)Force
C) change in momentum
D) velocity

17.The newton - second is the unit of
A)work
B)power
C)impulse
D)momentum

18.The ratio of displacement along diameter and total distance along circle
A)1:Ï€
B)2:Ï€
C) π:1
D) π:2
19.Two trucks of masses m and 3 m move towards each other in opposite directions with speeds 2v and v respectively.These trucks collide and stick together. What is the speed of the trucks after the collision?
A) v/4
B)v/2
C)v
D)5v/4

20 .A ball is dropped from the roof of a very tall building.What is it's velocity after falling for 5 seconds?
A)1.96ms-1
B)9.80ms-1
C) 49.0 ms-1
D)98.0ms-1

21. The path followed by a projectile is known as
A) range
B) trajectory
C)cycle
D) height

22.For which of the following angle rang is maximum
A)43 °
B)30°
C)60°
D)none

23.The slope of distance - time graph will always be
A) negative
B) positive
C)zero
D) maximum

24. If two objects of equal masses m are moving towards each other with the same speed v then what will be the final momentum after elastic head on collision
A)-mv kg s-1
B)2 mv kg s-1
C)mv kg ms-1
D)0 kg ms-1

25. The numerical ratio of displacement to distance is
A) Always less than 1
B) Always equal to one
C)Always more than 1
D)equal to or less than 1


26.A cyclist is traveling at 15 ms-1 she applies brakes so that she dose not collide with the wall in front of her distance of 18 m.Calculate the magnitude of deceleration?
A)6.3 ms-1
B)13ms-1
C)5.3 ms-1
D)12.5ms-1

27.If the slope of velocity time graph is not constant at different points, then body is moving with
A) uniform velocity
B) Average acceleration
C)Increasing acceleration
D)Constant acceleration

28.A hand ball is tossed vertically upward with the velocity of 19.6 meters per second . Approximately how high will it rise?
A)15 m
B)20 m
C)25 m
D)30 m

29.Two projectile are projected at angle of 20° and 70° with same velocity which one have longer rang
A)which is fired at 20°
B)both have same range
C) which is fired at 70 °
D) none of these

30.A shell explodes into four unequal parts. Which of the following is conserved?
A) potential energy
B) kinetic energy
C) momentum
D) both potential and kinetic energy



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Key will be shared soon 
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Regards : Liaqat Mdcat