HomePhysics Class 11Laws of motion MCQ test 2 Laws of motion MCQ test 2 Laws of motion Class 11 CBSE - MCQ test 2 Question:1 Passengers are pushed back when a car starts abruptly. Which of the following laws of motion explain it? Newton's first law of motion Newton's second law of motion Newton's third law of motion None Question:2 The ............ of a body is equivalent to the ratio of the force acting on it to the acceleration it generates. Momentum Impulse Inertial Mass None of these Question:3 Passengers on a bus travelling at a constant speed is pushed backward, When the bus accelerates forward abruptly.This force is referred to as Gravitational Force Magnetic Force Fictitious/Pseudo Force None of these Question:4 If the force applied to a body is doubled and the mass is cut in half, What would be the accelerations’ ratio? 2:2 1:2 4:2 1:4 Question:5 An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.The above statement is Law of inertia Newton's first law of motion Both A snd B None of these Question:6 If a body’s net external force is zero, it has Zero velocity Zero acceleration Non zero acceleration None of these Question:7 What are the components required to calculate the momentum of a body? Mass & acceleration Mass & Velocity Force & Time None of these Question:8 The quicker the momentum changes The force is less. The force is zero. The force is greater. None of these Question:9 A body’s rate of change of momentum is: Directly proportional to acceleration. Directly proportional to appled force. Inversely proportional to applied force. None of these Question:10 The rate at which a body’s momentum changes is proportional to the force applied and occurs in the direction in which the force is applied.This is: Law of inertia First law of motion Second law of motion Third law motion Question:11 The component of contact force that is perpendicular to the surface in contact is referred to as: Frictional force Normal force Perpendicular force None of these Question:12 Inertia is the property of a body linked to tendency of a body Change of position Change of direction Resist the state of rest or uniform motion None of these Question:13 When a ball of mass 5 kg hits a bat with velocity 3m/s in positive direction and it move back with a velocity 4m/s.What would be the impulse? 5N 35N 25N None of these Question:14 A particle of mass m has momentum p.Its kinetic energy will be mp p²/m p²/2m p²m Question:15 A particle of mass m at rest is acted upon by a constant force F for time t.What would be kinetic energy after time t: F²t²/m F²t²/3m F²t²/2m None of these Question:16 Force depends on : change in momentum how fast the change in momentum is brought about Both (a) & (b) None of these Question:17 Which motion does not require force to maintain it ? Uniform circular motion Elliptical motion Uniform straight line motion Projectile motion Question:18 A jet engine works on the principle of conservation of mass conservation of energy conservation of angular momentum conservation of linear momentum Question:19 A reference frame attached to the earth is an inertial frame cannot be an inertial frame because earth is revolving round the sun is an inertial frame because Newton’s laws are applicable is an inertial frame because the earth is rotating about its own axis Question:20 A man is standing at the centre of frictionless pond of ice. How can he get himself to the shore? By throwing his shirt in vertically upward direction He will wait for the ice to melt in pond Unable to get at the shore By spitting horizontally Submit Newer Older
