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3.2 , motion in plane — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics3.2 , motion in plane1 Mark
MCQ
A particle moves in a circular path with decreasing speed. Choose the correct statement.
  • A
    Angular momentum remains constant
  • B
    Acceleration ($\vec a$) is towards the center
  • C
    Particle moves in a spiral path with decreasing radius
  • ✓
    The direction of angular momentum remains constant
✓

Answer

Correct option: D.
The direction of angular momentum remains constant
d
(d) Angular momentum is a axial vector. It is directed always in a fix direction (perpendicular to the plane of rotation either outward or inward), if the sense of rotation remain same.

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