Free Rotational and Circular Motion MCQs with Answers
521 Rotational and Circular Motion MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Angular displacement and angular velocity describe rotation, with angles measured in radians and related to time through angular speed. The connection between angular and linear quantities includes arc length, tangential speed and centripetal acceleration, so circular motion is not confused with motion at constant velocity.
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Read the Rotational and Circular Motion notesFree MDCAT chapter notes with key terms521 questions · page 22 of 27
- A. pi/3
- B. pi/2
- C. 2pi
- D. 2pi/3
Explanation: We know that60 mins= 60×60 secs=3600 secondsHence , Using above calculations, The answer is 3600"
Correct answer: 2pi/3- A. Its displacement is constant
- B. Its displacement changes due to change in distance
- C. Its displacement changes due to change in direction of motion
- D. Its displacement is always zero
Explanation: Displacement in a closed path is always zero.
Correct answer: Its displacement is always zero- A. 0.01745 m
- B. 1 m
- C. 2 m
- D. None
Explanation: To calculate the value of S, we can use the formula: S = r × θ Given that r = 1 m and θ = 1 degree, we substitute these values into the…
Correct answer: 0.01745 m- A. Left-hand rule
- B. Head to tail rule
- C. Right-hand rule
- D. None of these options is correct
Explanation: Angular displacement is a vector quantity and its direction is along the axis of rotation, which is determined by the "Right-hand rule,'…
Correct answer: Right-hand rule- A. πr
- B. 2πr
- C. Zero
- D. 4π
Explanation: Angular displacement is the shortest angle between the initial and the final position for an object in a circular motion around a fixed…
Correct answer: 4π- A. 30 rev
- B. 27 rev
- C. 40 rev
- D. 10 rev
Explanation: ω = angular frequency of the wave. t = time period of the wave.ωi= 3 revωf= 0 rev [ as it is turned off] T = 18 secAngular accelaration a…
Correct answer: 27 rev- A. Velocity is zero
- B. Radial distance is zero
- C. Options A and B both are possible
- D. It can never be zero
Explanation: θ= ωt [ θ is angular displacement] ω= vr [ where v is velocity and ω is angular velocity]θ= vrt , so when v is zero θ is also zero.
Correct answer: Options A and B both are possible- A. Clockwise
- B. Anti-clockwise
- C. Perpendicular
- D. Parallel
Explanation: The direction of angular displacement in an anticlockwise sense is considered as positive, while the direction of angular displacement in…
Correct answer: Anti-clockwise- A. 0 radian
- B. π radian
- C. 2π radian
- D. (1 /3) x π radian
Explanation: S= r x θ2pi x r =r x θθ = 2pi The definition of angular displacement is the angle traversed by the body in the circular arc.
Correct answer: 2π radian- A. Linear
- B. Non-linear
- C. Clockwise
- D. Anti-clockwise
Explanation: The angle in radians, degrees, or revolutions by which a point revolves around a center or a given axis in a specified sense is known as…
Correct answer: Anti-clockwise- A. 11π /3
- B. 7π /4
- C. 11π/6
- D. 7π/6
Explanation: To express the angle of 330 degrees in terms of π, you can divide the angle in degrees by 180 and multiply by π.Angle in radians = (330…
Correct answer: 11π/6- A. 57.3˚
- B. 360˚
- C. π degrees
- D. π2 degrees
Explanation: This is a fact. To convert 1 rad to degrees: 1 x 180/π = 57.3°
Correct answer: 57.3˚- A. 45 rad
- B. 10π rad5 rad
- C. 9π rad
- D. 5 rad
Explanation: According to Formula, Angular velocity = t For Angle = t = 3 15 = 45 rad So as all the options are in radian we will not convert it into…
Correct answer: 45 rad- A. Metre
- B. Kilometre
- C. Radian
- D. None of these
Explanation: The SI unit of angular displacement is radian (rad).
Correct answer: Radian435. One radian means
- A. Arc length of unit radius is half
- B. Arc length of unit radius is unity
- C. All of these
- D. One degree
Explanation: One radian is defined as the angle subtended from the center of a circle which intercepts an arc equal in length to the radius of the…
Correct answer: Arc length of unit radius is unity- A. Positive
- B. Negative
- C. Zero
- D. Infinite
Explanation: In angular acceleration, anti - clockwise rotation means torque is positive. B . Torque is negative while there is clockwise rotation.
Correct answer: Positive- A. One degree
- B. One rotation
- C. One radian
- D. None of these
Explanation: Option C is the right answer as "one radian" is the angle of the arc when the arc is equal to the radius of the circle.
Correct answer: One radian- A. The motion of the planets around the sun
- B. The moment of an electron around the nucleus
- C. The motion of the moon around the Earth
- D. The daily rotation of Earth causes day and night
Explanation: There are two types of circular motions; orbital motion and spin motion.
Correct answer: The daily rotation of Earth causes day and night- A. Positive
- B. Negative
- C. Zero
- D. Infinite
Explanation: a) Positive:Option (a) is correct. In the context of angular acceleration, clockwise rotation means the rotation is in the positive…
Correct answer: Positive- A. 300
- B. 400
- C. 500
- D. none of these
Explanation: The radian to degree conversion is given by;1 Rad = 57.3°so,7 Rad = x°This implies that,x° = 57.3 × 7= 401.1° ~ 400°Hence, 7 Radians = 400°
Correct answer: 400