Angular Momentum and Conservation of Angular Momentum and its Applications NEET Questions

Physics - Rotational Motion

Angular Momentum and Conservation of Angular Momentum and its Applications MCQ Questions


7.
The angular momentum L of a particle is related to its linear momentum p and position vector r as:
A.
Magnitude rp cosθ
B.
Magnitude rp sinθ, direction perpendicular to plane of r and p
C.
Magnitude rp tanθ
D.
Magnitude r/p, parallel to r
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ANSWER :
B. Magnitude rp sinθ, direction perpendicular to plane of r and p
8.
For a particle moving in a straight line, its angular momentum about a point on the line of motion is:
A.
Zero
B.
Constant non-zero value
C.
mvr
D.
Maximum
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ANSWER :
A. Zero
9.
A particle moves with constant velocity along a straight line that does NOT pass through the origin. Its angular momentum about the origin is:
A.
Continuously increasing
B.
Continuously decreasing
C.
Zero
D.
Constant (non-zero)
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ANSWER :
D. Constant (non-zero)
10.
For a system of particles, the total angular momentum about an origin is:
A.
Sum of (rᵢ × pᵢ) over all particles
B.
Average of individual angular momenta
C.
Product of all individual L values
D.
Vector difference of individual angular momenta
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ANSWER :
A. Sum of (rᵢ × pᵢ) over all particles
11.
Which physical quantity is best described as the 'moment of momentum'?
A.
Force
B.
Torque
C.
Angular momentum
D.
Impulse
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ANSWER :
C. Angular momentum
12.
For a rigid body rotating about a fixed (symmetry) axis with angular velocity ω and moment of inertia I about that axis, the angular momentum is:
A.
L = Iω
B.
L = I/ω
C.
L = ½Iω²
D.
L = mωr
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ANSWER :
A. L = Iω