NEET UG Physics Rational Motion MCQs

NEET UG Physics Rational Motion MCQs with answers available in Pdf for free download. The MCQ Questions for NEET Physics with answers have been prepared as per the latest NEET Physics syllabus, books and examination pattern. Multiple Choice Questions form important part of competitive exams and NEET exam and if practiced properly can help you to get higher rank. Refer to more topic wise NEET Physics Questions and also download more latest study material for all subjects and do free NEET Physics Mock Test

Rational Motion NEET Physics MCQ

NEET Physics students should refer to the following multiple-choice questions with answers for Rational Motion in NEET. These MCQ questions with answers for NEET Physics will come in exams and help you to score good marks

Rational Motion MCQ Questions with Answers

NEET UG Physics Rational Motion MCQs

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MCQ

For the answer of the following questions choose the correct alternative from among the given ones.

1. The centre of mass of a systems of two particles is
(A) on the line joining them and midway between them
(B) on the line joining them at a point whose distance from each particle is proportional to the square of the mass of that particle.
(C) on the line joining them at a point whose distance from each particle inversely propotional to the mass of that particle.
(D) On the line joining them at a point whose distance from each particle is proportional to the mass of that particle.
 
2. Particles of 1 gm, 1 gm, 2 gm, 2 gm are placed at the corners A, B, C, D, respectively of a square of side 6 cm as shown in figure. Find the distance of centre of mass of the system from geometrical centre of square.
{A} 1 cm
{B} 2 cm
{C} 3 cm
{D} 4 cm
 
3. Three particles of the same mass lie in the (X, Y) plane, The (X, Y) coordinates of their positions are (1, 1), (2, 2) and (3, 3) respectively. The (X,Y) coordinates of the centre of mass are
{A} (1, 2) {B} (2, 2) {C} (1.5, 2) {D} (2, 1.5)
 
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ASSERTION - REASONING TYPE

92. In the following questions statement - 1 (Assertion) is followed by statement - 2 (Reason). Each question has the following four choices out of which only one choice is correct.
{A} Statement - 1 is correct (true), Statement - 2 is true and Statement- 2 is correct explanation for Statement - 1
{B} Statement -1 is true, statement -2 is true but statement-2 is not the correct explanation four statement -1.
{C} Statement - 1 is true, statement-2 is false
{D} Statement-2 is false, statement -2 is true
 
93. Statement -1 — The angular momentum of a particle moving in a circular orbit with a constant speed remains conserved about any point on the circumference of the circle.
      Statement -2— If no net torque outs, the angular momentum of a system is conserved.
 
94. Statement -1— A sphere and a cylinder slide without rolling from rest from the top of an inclined plane. They will reach the bottom with the same speed.
      Statement -2 — Bodies of all shapes, masses and sides slide down a plane with the same acceleration.
 
95. Statement -1— Friction is necessary for a body to roll on surface
      Statement -2— Friction provides the necessary tangential force and torque.
 
96. Statement -1— A body tied to a string is moved in a circle with a uniform speed. If the string suddenly breaks the angular momentum of the body becomes zero.
      Statement -2 — The torque on the body equals to the rate of change of angular momentum.
 
97. Statement -1 — If there is no external torque on a body about its centre of mass, then the velocity of the centre of mass remains constant.
      Statement -2 — The Linear momentum of an isolated system remains constant.
 
98. Statement -1 —Two cylinder one hollow and other solid (wood) with the same mass and identical dimensions are simultaneously allowed to roll without slipping down an inclined plane from the same height. The hollow will reach the bottom of inclined plane first.
Statement -2 — By the principle of conservation of energy, the total kinetic energies of both the cylinders are identical when they reach the bottom of the incline.
 
99. Statement -1 —A thin uniform rod AB of mass M and length L is hinged at one end A to the horizontal floor initially it stands vertically. It is allowed to fall freely on the floor in the vertical plane, The angular velocity of the rod when its ends B strikes the floor 
√3g/L
Statement -2 — The angular momentum of the rod about the hinge remains constant through out its fall to the floor.
 
100 .  Statement -1 —If the cylinder rolling with angular speed- w. suddenly breaks up in to two equal halves of the same radius. The angular speed of each piece becomes 2w.
          Statement -2—If no external torque outs, the angular momentum of the system is conserved.
 
 
 
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