← All previous year questions
HCS (Haryana)Prelims2023General Studies
Question
Which of the following statements regarding linear motion and uniform circular motion is/ are TRUE? 1. In a uniform linear motion, a body moves in the same direction with a constant speed but in uniform circular motion, the speed of the body remains constant and the direction of the motion changes continuously. 2. In a uniform linear motion, there is instantaneous change in velocity but in uniform circular motion, the velocity remains the same. 3. A uniform linear motion is an accelerated motion but a uniform circular motion,is not an accelerated motion. Choose the correct answer from the Options given below:
Options
- A 2 and 3 only
- B 3 only
- C 1only
- D 1 and 3 only
Show AnswerHide Answer
Correct Answer
C 1only
Model Answer
- In a uniform linear motion, a body moves in the same direction with a constant speed, but in a uniform circular motion, the speed of the body remains constant and the direction of the motion changes continuously. Hence, Statement 1 is correct.
- For a body moving in a uniform circular motion the speed attained by the object will remain constant not the velocity as velocity depends on the direction of motion, and in circular motion the direction of the object changes at every point. Hence, Statement 2 is not correct.
- In a uniform linear motion, the direction of motion is fixed and since it also has a constant speed, uniform linear motion is not accelerated. In a uniform circular motion, the direction of motion changes continuously. So even if it has a constant speed, it is accelerated. Hence, Statement 3 is not correct.