Note: i. Velocity describes motion. (āĻŦā§āĻā§ āĻāϤāĻŋā§° āĻŦā§°ā§āĻŖāύāĻž āĻā§°ā§āĨ¤), ii. Acceleration describes change in motion. (āϤā§āĻŦā§°āĻŖā§ āĻāϤāĻŋā§° āĻĒā§°āĻŋāĻŦā§°ā§āϤāύ⧰ āĻŦā§°ā§āĻŖāύāĻž āĻā§°ā§āĨ¤
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Velocity (āĻŦā§āĻ) & Acceleration (āϤā§āĻŦā§°āĻŖ) MCQ
1. Velocity is the rate of change of: (ā§§. āĻŦā§āĻ āĻāĻŋāĻšā§° āĻĒā§°āĻŋāĻŦā§°ā§āϤāύ⧰ āĻšāĻžā§° ?)
(a) Distance (āĻĻā§ā§°āϤā§āĻŦ) (b) Displacement (āϏā§āĻĨāĻžāύāĻžāύā§āϤ⧰) (c) Speed (āĻĻā§ā§°ā§āϤāĻŋ) (d) Time (āϏāĻŽāϝāĻŧ)
Ans / āĻāϤā§āϤ⧰: (b) Displacement
Explanation / āĻŦā§āϝāĻžāĻā§āϝāĻž: Velocity = Displacement ÷ Time. (āĻŦā§āĻ = āϏā§āĻĨāĻžāύāĻžāύā§āϤ⧰ ÷ āϏāĻŽāϝāĻŧāĨ¤)
2. Acceleration is the rate of change of: (⧍. āϤā§āĻŦā§°āĻŖ āĻāĻŋāĻšā§° āĻĒā§°āĻŋāĻŦā§°ā§āϤāύ⧰ āĻšāĻžā§° ?)
(a) Distance (āĻĻā§ā§°āϤā§āĻŦ) (b) Speed (āĻĻā§ā§°ā§āϤāĻŋ) (c) Velocity (āĻŦā§āĻ) (d) Mass (āĻā§°)
Ans / āĻāϤā§āϤ⧰: (c) Velocity
Explanation / āĻŦā§āϝāĻžāĻā§āϝāĻž: Acceleration measures the change in velocity. (āϤā§āĻŦā§°āĻŖā§ āĻŦā§āĻā§° āĻĒā§°āĻŋāĻŦā§°ā§āϤāύ āĻā§āĻā§āĨ¤)
3. Which formula is correct for velocity ? (ā§Š. āĻŦā§āĻā§° āĻŦāĻžāĻŦā§ āĻā§āύāĻā§ āϏā§āϤā§ā§° āϏāĻ āĻŋāĻ ?)
(a) Velocity = Distance × Time (b) Velocity = Displacement ÷ Time (c) Velocity = Force ÷ Time (d) Velocity = Mass × Time
Ans / āĻāϤā§āϤ⧰: (b) Velocity = Displacement ÷ Time
4. The SI unit of acceleration is: (ā§Ē. āϤā§āĻŦā§°āĻŖā§° SI āĻāĻāĻ āĻāĻŋ ?)
(a) m/s (b) km/h (c) m/s² (d) N
Ans / āĻāϤā§āϤ⧰: (c) m/s²
5. Which quantity tells how fast and in what direction an object moves ? (ā§Ģ. āĻā§āύ ā§°āĻžāĻļāĻŋāϝāĻŧā§ āĻā§āύ⧠āĻŦāϏā§āϤ⧠āĻāĻŋāĻŽāĻžāύ āĻĻā§ā§°ā§āϤ āĻā§°ā§ āĻā§āύ āĻĻāĻŋāĻļāϤ āĻāϤāĻŋ āĻā§°ā§ āϤāĻžāĻ āĻŦā§āĻāĻžāϝāĻŧ ?)
(a) Distance (b) Speed (c) Velocity (d) Acceleration
Ans / āĻāϤā§āϤ⧰: (c) Velocity
6. Which quantity tells how velocity is changing ? (ā§Ŧ. āĻā§āύ ā§°āĻžāĻļāĻŋāϝāĻŧā§ āĻŦā§āĻ āĻā§āύā§āĻā§ āϏāϞāύāĻŋ āĻšā§āĻā§ āϤāĻžāĻ āĻŦā§āĻāĻžāϝāĻŧ ?)
(a) Distance (b) Velocity (c) Time (d) Acceleration
Ans / āĻāϤā§āϤ⧰: (d) Acceleration
7. Which of the following is an example of velocity ? ā§. āϤāϞ⧰ āĻā§āύāĻā§ āĻŦā§āĻā§° āĻāĻĻāĻžāĻšā§°āĻŖ ?
(a) 20 m/s (b) 10 km (c) 20 m/s east (d) 5 s
Ans / āĻāϤā§āϤ⧰: (c) 20 m/s east
Explanation / āĻŦā§āϝāĻžāĻā§āϝāĻž: Direction (east) is given, so it is velocity. (āĻĻāĻŋāĻļ (āĻĒā§āĻŦ) āĻāϞā§āϞā§āĻ āĻāĻā§, āϏā§āϝāĻŧā§ āĻ āĻŦā§āĻāĨ¤)
8. Which of the following is an example of acceleration ? (ā§Ž. āϤāϞ⧰ āĻā§āύāĻā§ āϤā§āĻŦā§°āĻŖā§° āĻāĻĻāĻžāĻšā§°āĻŖ ?)
(a) 30 km/h north (b) 15 m/s west (c) 2 m/s² east (d) 10 m
Ans / āĻāϤā§āϤ⧰: (c) 2 m/s² east
9. Velocity and acceleration are both: (⧝. āĻŦā§āĻ āĻā§°ā§ āϤā§āĻŦā§°āĻŖ āĻĻā§āϝāĻŧā§āĻāĻžāĻ āĻāĻŋ ?)
(a) Scalar Quantities (b) Vector Quantities (c) Units (d) Forces
Ans / āĻāϤā§āϤ⧰: (b) Vector Quantities
Explanation / āĻŦā§āϝāĻžāĻā§āϝāĻž: Both have magnitude and direction. (āĻĻā§āϝāĻŧā§āĻāĻžā§°ā§āĻ āĻŽāĻžāύ āĻā§°ā§ āĻĻāĻŋāĻļ āĻĨāĻžāĻā§āĨ¤)
10. Which statement is correct ? (ā§§ā§Ļ. āĻā§āύāĻā§ āĻāĻā§āϤāĻŋ āϏāĻ āĻŋāĻ ?)
(a) Velocity describes change in motion.
(b) Acceleration describes motion.
(c) Velocity describes motion and acceleration describes change in motion.
(d) Both are scalar quantities.
Ans / āĻāϤā§āϤ⧰: (c) Velocity describes motion and acceleration describes change in motion.
Explanation / āĻŦā§āϝāĻžāĻā§āϝāĻž: Velocity tells about motion, while acceleration tells about changes in motion. (āĻŦā§āĻā§ āĻāϤāĻŋā§° āĻŦāĻŋāώāϝāĻŧā§ āĻāϝāĻŧ, āĻā§°ā§ āϤā§āĻŦā§°āĻŖā§ āĻāϤāĻŋā§° āĻĒā§°āĻŋāĻŦā§°ā§āϤāύ⧰ āĻŦāĻŋāώāϝāĻŧā§ āĻāϝāĻŧāĨ¤)