Which of the following is not a vector quantity? MCQ with Answer and Explanation

Which of the following is not a vector quantity?
A. Speed
B. Momentum
C. Velocity
D. Force
Answer: Option A
Solution (By JKExamLibrary)
Speed has magnitude only, scalar. Velocity is vector (speed + direction). Momentum and force are vectors. Distance is scalar, displacement vector.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error
Two bodies of masses m and 2m are dropped from a height. Neglecting air resistance, which hits first?
A. Depends on height
B. Both same
C. 2m
D. m

Correct Answer: Option B


Explanation:
Acceleration g same for all masses in vacuum.

This question belongs to: Science Physics
Question #2 Report Error
The velocity of sound is maximum in
A. Vacuum
B. Water
C. Air
D. Steel

Correct Answer: Option D


Explanation:
Speed of sound: solids > liquids > gases. In steel ~5000 m/s, water ~1500 m/s, air ~340 m/s. Vacuum no propagation. Speed depends on density and elasticity.

This question belongs to: Science Physics
Question #3 Report Error
The unit of pressure in SI is
A. Torr
B. Atmosphere
C. Bar
D. Pascal

Correct Answer: Option D


Explanation:
Pascal = N/m². Named after Blaise Pascal. Bar = 10⁵ Pa, atmosphere = 101325 Pa, torr = 133.3 Pa. SI unit is Pascal.

This question belongs to: Science Physics