Refer to JEE Physics Laws Of Motion MCQs Set C provided below available for download in Pdf. The MCQ Questions for Full Syllabus Physics with answers are aligned as per the latest syllabus and exam pattern suggested by JEE (Main), NCERT and KVS. Multiple Choice Questions for Laws Of Motion are an important part of exams for Full Syllabus Physics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for JEE (Main) Full Syllabus Physics and also download more latest study material for all subjects
MCQ for Full Syllabus Physics Laws Of Motion
Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Laws Of Motion in Full Syllabus.
Laws Of Motion MCQ Questions Full Syllabus Physics with Answers
Question: Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is
- a) 0.5 N
- b) 1.5 N
- c) None of this
- d)
Answer: 0.5 N
Question: In a rocket, fuel burns at the rate of 1 kg/s. This fuel is ejected from the rocket with a velocity of 60 km/s. This exerts a force on the rocket equal to
- a) 60000 N
- b) 6000 N
- c) 60 N
- d) 600 N
Answer: 60000 N
Question:
- a)
- b)
- c)
- d)
Answer:
Question: A man fires a bullet of mass 200 gm at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backward?
- a) 1 m/s
- b) 0.01 m/s
- c) 0.1 m/s
- d) 10 m/s
Answer: 1 m/s
Question:
- a)
- b)
- c) 20 kg
- d) 10 kg
Answer:
Question: A 10 N force is applied on a body produces in it an acceleration of 1 m/s2. The mass of the body is
- a) 10 kg
- b) 5 kg
- c) 20 kg
- d) 15 kg
Answer: 10 kg
Question: force of 6 N acts on a body at rest and of mass 1 kg. During this time, the body attains a velocity of 30 m/s. The time for which the force acts on the body is
- a) 5 second
- b) 7 second
- c) 10 second
- d) 8 second
Answer: 5 second
Question: A shell, in flight, explodes into four unequal parts
- a) Momentum
- b) Kinetic energy
- c) Potential energy
- d) None of this
Answer: Momentum
Question: A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms–1. To give an initial upward acceleration of 20 ms–2, the amount of gas ejected per second to supply the needed thrust will be (g= 10 ms–2)
- a) 187.5 kg s–1
- b) 185.5 kg s–1
- c) 127.5 kg s–1
- d) 137.5 kg s–1
Answer: 187.5 kg s–1
Question: A bullet is fired from a gun. The force on the bullet is given by F = 600 – 2 x 105 t, where F is in newton and t in second. The force on the bullet becomes zero as soon as it leaves the barrel. What is the impulse imparted to the bullet?
- a) 0.9 Ns
- b) 1.8 Ns
- c) 0
- d) 9 Ns
Answer: 0.9 Ns
Question: A ball of mass 0.25 kg attached to the end of a string of length 1.96 m is moving in a horizontal circle. The string will break if the tension is more than 25 N. What is the maximum speed with which the ball can be moved?
- a) 14 m/s
- b) 3.92 m/s
- c) 3 m/s
- d) 5 m/s
Answer: 14 m/s
Question: A mass of 1 kg is suspended by a thread. It is (i) lifted up with an acceleration 4.9 m/s2, (ii) lowered with an acceleration 4.9 m/s2. The ratio of the tensions is
- a) 3 : 1
- b) 2 : 1
- c) 1 : 2
- d) 1 : 3
Answer: 3 : 1
Question: If the force on a rocket, that releases the exhaust gases with a velocity of 300 m/s is 210 N, then the rate of combustion of the fuel is
- a) 0.7 kg/s
- b) 10.7 kg/s
- c) 1.4 kg/s
- d) 0.07 kg/s
Answer: 0.7 kg/s
Question: A 500 kg car takes a round turn of radius 50 m with a velocity of 36 km/h. The centripetal force is
- a) 1000 N
- b) 750 N
- c) 1200 N
- d) 250 N
Answer: 1000 N
Question: Three blocks with masses m, 2m and 3m are connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward at constant speed v. What is the net force on the block of mass 2 m? (g is the acceleration due to gravity)
- a) 0
- b) 6 mg
- c) 3 mg
- d) 2 mg
Answer: 0
Question: Two masses as shown are suspended from a massless pulley. Calculate the acceleration of the 10 kg mass when masses are left free
- a)
- b)
- c)
- d)
Answer:
Question: An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of 12 ms–1 and the second part of mass 2 kg moves with 8 ms–1 speed. If the third part flies off with 4 ms–1 speed, then its mass is
- a) 5 kg
- b) 7 kg
- c) 17 kg
- d) 3 kg
Answer: 5 kg
Question: A mass of 1 kg is thrown up with a velocity of 100 m/s. After 5 second, it explodes into two parts. One part of mass 400 g moves down with a velocity 25 m/s. Calculate the velocity of other part just after the explosion. (g = 10 ms–2)
- a)
- b)
- c)
- d)
Answer:
Question:
- a)
- b)
- c)
- d)
Answer:
Question: A body of mass 3 kg moving with velocity 10 m/s hits a wall at an angle of 60° and returns at the same angle. The impact time was 0.2 s. Calculate the force exerted on the wall.
- a)
- b)
- c) 100 N
- d) 75 N
Answer:
More Questions........................................
Question: A body of mass 3 kg moving with velocity 10 m/s hits a wall at an angle of 60° and returns at the same angle. The impact time was 0.2 s. Calculate the force exerted on the wall.
- a)
- b)
- c) 100 N
- d) 75 N
Answer:
Question: A cricketer catches a ball of mass 150 g in 0.1 s moving with speed 20 m/s, then he experiences force of
- a) 30 N
- b) 300 N
- c) 3 N
- d) 0.3 N
Answer: 30 N
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a) 5 N
- b) 6 N
- c) 5.88 N
- d) 8 N
Answer: 5 N
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a) 5 m/s2
- b) 10 m/s2
- c) 15 m/s2
- d) 0.5 m/s2
Answer: 5 m/s2
Question: A lift of mass 1000 kg is moving with acceleration of 1 m/s2 in upward direction, then the tension developed in string which is connected to lift is
- a) 10,800 N
- b) 11,000 N
- c) 10,000 N
- d) 9800 N
Answer: 10,800 N
Question: A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 kg is suspended from it but will break if the mass exceeds 25 kg. What is the maximum acceleration with which the monkey can climb up along the rope? (g = 10 m/s2)
- a) 2.5 m/s2
- b) 25 m/s2
- c) 10 m/s2
- d) 5 m/s2
Answer: 2.5 m/s2
Question: A man weighs 80 kg. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 5 m/s2. What would be the reading on the scale? (g = 10 m/s2)
- a) 1200 N
- b) 800 N
- c) 400 N
- d) Zero
Answer: 1200 N
Question:
- a) 0.4 kg
- b) 0.2 kg
- c) 4.0 kg
- d) 2.0 kg
Answer: 0.4 kg
Question:
- a)
- b)
- c)
- d) mg
Answer:
Question: A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s. A bob is suspended from the roof of the car by a light wire of length 1.0 m. The angle made by the wire with the vertical is
- a)
- b)
- c)
- d) 0°
Answer:
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a)
- b)
- c)
- d)
Answer:
Question: A roller coaster is designed such that riders experience “weightlessness” as they go round the top of a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between
- a) 14 m/s and 15 m/s
- b) 13 m/s and 14 m/s
- c) 15 m/s and 16 m/s
- d) 16 m/s and 17 m/s
Answer: 14 m/s and 15 m/s
Question: The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is
- a) 4 ms–2 upwards
- b) 4 ms–2 downwards
- c) 30 ms–2 downwards
- d) 14 ms–2 upwards
Answer: 4 ms–2 upwards
Question: An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are, 1 kg first part moving with a velocity of 12 ms–1 and 2 kg second part moving with a velocity of 8 ms–1. If the third part flies off with a velocity of 4 ms–1, its mass would be
- a) 5 kg
- b) 3 kg
- c) 7 kg
- d) 17 kg
Answer: 5 kg
Question:
- a)
- b)
- c)
- d)
Answer:
Question: A man of 50 kg mass is standing in a gravity free space at a height of 10 m above the floor. He throws a stone of 0.5 kg mass downwards with a speed 2 m/s. When the stone reaches the floor, the distance of the man above the floor will be
- a) 10.1 m
- b) 10 m
- c) 9.9 m
- d) 20 m
Answer: 10.1 m
Question:
- a)
- b)
- c)
- d)
Answer:
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MCQs for Laws Of Motion Physics Full Syllabus
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