Refer to CBSE Class 11 Physics Systems of Particles and Rotational Motion MCQs provided below. CBSE Class 11 Physics MCQs with answers available in Pdf for free download. The MCQ Questions for Class 11 Physics with answers have been prepared as per the latest syllabus, CBSE books and examination pattern suggested in Class 11 by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 7 System of Particles and Rotational Motion are an important part of exams for Class 11 Physics and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 11 Physics and also download more latest study material for all subjects
MCQ for Class 11 Physics Chapter 7 System of Particles and Rotational Motion
Class 11 Physics students should refer to the following multiple-choice questions with answers for Chapter 7 System of Particles and Rotational Motion in Class 11. These MCQ questions with answers for Class 11 Physics will come in exams and help you to score good marks
Chapter 7 System of Particles and Rotational Motion MCQ Questions Class 11 Physics with Answers
Question: The centre of mass of a body
a) lies always on the surface of the body
b) lies always inside the body
c) may lie within, outside on the surface of the body
d) lies always outside the body
Answer: lies always on the surface of the body
Question: The position of centre of mass of a system of particles does not depend upon the
a) relative distance between the particles
b) position of the particles
c) symmetry of the body
d) mass of particles
Answer: relative distance between the particles
Question: The motion of the centre of mass depends on
a) total external forces
b) total internal forces
c) None of these
d) Both
Answer: total external forces
Question: The centre of mass of two particles lies on the line
a) joining the particles
b) perpendicular to the line joining the particles
c) at any angle to this line
d) None of these
Answer: joining the particles
Question: In rotatory motion, linear velocities of all the particles of the body are
a) different
b) zero
c) cannot say
d) None of these
Answer: different
Question: If the resultant of all external forces is zero, then velocity of centre of mass will be
a) zero
b) neither (a) nor (b)
c) constant
d) either (a) or (b)
Answer: zero
Question: In rotation of a rigid body about a fixed axis, every ...A...of the body moves in a ...B..., which lies in a plane ...C... to the axis and has its centre on the axis. Here, A, B and C refer to
a) particle, circle and perpendicular
b) particle perpendicular and perpendicular
c) circle, particle and perpendicular
d) particle, perpendicular and circle
Answer: particle, circle and perpendicular
Question: Centre of mass of the earth and the moon system lies
a) closer to the earth
b) closer to the moon
c) at the mid-point of line joining the earth and the moon
d) cannot be predicted
Answer: closer to the earth
Question: A stick is thrown in the air and lands on the ground at some distance from the thrower. The centre of mass of the stick will move along a parabolic path
a) in all cases
b) only if the stick is uniform
c) only if the stick has linear motion but no rotational motion
d) only if the stick has a shape such that its centre of mass is located at some point on it and not outside it
Answer: in all cases
Question: Assertion : The centre of mass of an isolated system has a constant velocity.
Reason : If centre of mass of an isolated system is already at rest, it remains at rest.
a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
b) Assertion is correct, reason is correct; reason is a correct explanation for assertion.
c) Assertion is incorrect, reason is correct
d) Assertion is correct, reason is incorrect
Answer: Assertion is correct, reason is correct; reason is not a correct explanation for assertion
Question: Concrete mixture is made by mixing cement, stone and sand in a rotating cylindrical drum. If the drum rotates too fast, the ingredients remain stuck to the wall of the drum and proper mixing of ingredients does not take place. The maximum rotational speed of the drum in revolutions per minute (rpm) to ensure proper mixing is close to : (Take the radius of the drum to be 1.25 m and its axle to be horizontal):
a) 27.0
b) 0.4
c) 1.3
d) 8.0
Answer: 27.0
Question: Angular velocity of each particle of a rotating rigid body about axis of rotation is
a) same
b) different
c) depends on relative position
d) None of these
Answer: same
Question: A wheel rotates with a constant acceleration of 2.0 radian/sec2. If the wheel starts from rest, the number of revolutions it makes in the first ten seconds will be approximately
a) 16
b) 24
c) 32
d) 8
Answer: 16
Question: A wheel has a speed of 1200 revolutions per minute and is made to slow down at a rate of 4 radians/s2. The number of revolutions it makes before coming to rest is
a) 314
b) 722
c) 272
d) 143
Answer: 314
Question: When a ceiling fan is switched off, its angular velocity falls to half while it makes 36 rotations. How many more rotations will it make before coming to rest?
a) 12
b) 18
c) 36
d) 24
Answer: 12
Question: A mass is revolving in a circle which is in the plane of paper. The direction of angular acceleration is
a) upward the radius
b) towards the radius
c) tangential
d) at right angle to angular velocity
Answer: upward the radius
Question: Which component of force contributes to the torque?
a) Transverse component
b) Either radial or transverse
c) Radial component
d) None of these
Answer: Transverse component
Question: A couple produces
a) rotational motion
b) linear motion
c) both
d) None of these
Answer: rotational motion
Question: Which of the following statements about angular momentum is correct?
a) It is directly proportional to moment of inertia
b) It is a scalar quantity
c) both
d) None of these
Answer: It is directly proportional to moment of inertia
Question: The wide handle of screw is based upon
a) turning moment of force
b) None of these
c) law of conservation of linear momentum
d) upon
Answer: turning moment of force
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CBSE Class 11 Physics Chapter 7 System of Particles and Rotational Motion MCQs
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MCQs for Physics CBSE Class 11 Chapter 7 System of Particles and Rotational Motion
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Chapter 7 System of Particles and Rotational Motion MCQs Physics CBSE Class 11
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Chapter 7 System of Particles and Rotational Motion CBSE Class 11 MCQs Physics
Regular MCQs practice helps to gain more practice in solving questions to obtain a more comprehensive understanding of Chapter 7 System of Particles and Rotational Motion concepts. MCQs play an important role in developing understanding of Chapter 7 System of Particles and Rotational Motion in CBSE Class 11. Students can download and save or print all the MCQs, printable assignments, practice sheets of the above chapter in Class 11 Physics in Pdf format from studiestoday. You can print or read them online on your computer or mobile or any other device. After solving these you should also refer to Class 11 Physics MCQ Test for the same chapter
CBSE MCQs Physics Class 11 Chapter 7 System of Particles and Rotational Motion
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