HomePhysics Class 11Laws of motion MCQ test 3 Laws of motion MCQ test 3 Laws of motion Class 11 CBSE - MCQ test 3 Question:1 A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads 49 N, when the lift is stationary. If the lift moves downwards with an acceleration of 5 m/s, the reading of the spring balance will be Less than 49N More than 49N Remains same. None Question:2 Which physical quantity is found from the area under force-time graph? Momentum Impulse Inertial Mass None of these Question:3 Two objects having different masses have same momentum. Which one of them will move faster? Both will move with same speed Object with heavier mass Object with smaller mass. None of these Question:4 An athelete runs some distance before taking a jump. To warm up the body Just for entertainment & Nothing To increase momentum for long jump None of these Question:5 A bus weighing 1000 kg is at rest on the bus stand. What is the linear momentum of the bus? Positive Negative Zero None of these Question:6 If the tension in the cable supporting an elevator is equal to the weight of the elevator, the elevator may go up with non uniform velocity. go up with uniform velocity. go dowardd with non zero acceleration None of these Question:7 The physical quantity which is equal to the change in momentum of a body is known Mass & acceleration Force Momentum None of these Question:8 When the body is in motion its always change its? Velocity Direction Position vector None of these Question:9 The body moving with uniform velocity changes its? Acceleration Displacement Speed None of these Question:10 Inertia of an object is quantitative measure of ... Density Pressure Mass Velocity Question:11 Which of the following have always same in direction? Force and velocity Force and acceleration Force and momentum None of these Question:12 A force of 10N acts on a body of mass 20kg for 10 seconds. The change in its momentum is: 50 Kgm/s 75 Kgm/s 100 Kgm/s None of these Question:13 A force of 100 N acts on a body mass 2 kg for 10 s. The change in the velocity of the body is: 100m/s 500m/s 200m/s None of these Question:14 The same force for the same time causes the _____ change in momentum for different bodies Diffrent Greater Same None of these Question:15 The second law of motion can be stated as: F = k*(dv/dt) F = k*(dm/dt) F = k*(dp/dt) None of these Question:16 In the second law, if F= 0 then Acceleration = 0 Mass = 0 Velocity = 0 None of these Question:17 Equilibrium of a particle in mechanics refers to the situation when Net external force in the particle is non zero Net external force on the particle is zero Both a and b None of these Question:18 Force on a body A by body B is ______ to the force on the body B by A. Opposite Equal Equal and opposite None Question:19 Which of the following has the greatest inertia? A single atom A molecule A one-rupee coin A cricket ball Question:20 What are the components required to calculate the momentum of a body? Mass and acceleration Displacement and mass Force and time Velocity and mass Submit Newer Older
