NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Motion in Two Dimensions
NEET · Physics · Motion in Two Dimensions
Given below are two statements: one is labelled as Assertion (A)...
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A particle executing uniform circular motion possesses a constant linear acceleration.
Reason (R): In uniform circular motion, the acceleration vector always points towards the center of the circular path, meaning its direction continuously changes.
In the light of the above statements, choose the most appropriate answer from the options given below:
Assertion (A): A particle executing uniform circular motion possesses a constant linear acceleration.
Reason (R): In uniform circular motion, the acceleration vector always points towards the center of the circular path, meaning its direction continuously changes.
In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth Assertion (A) and Reason (R) are correct and Reason (R) is the correct explanation of Assertion (A)
- BBoth Assertion (A) and Reason (R) are correct but Reason (R) is not the correct explanation of Assertion (A)
- CAssertion (A) is correct but Reason (R) is not correct
- DAssertion (A) is not correct but Reason (R) is correct
Correct answer
D. Assertion (A) is not correct but Reason (R) is correct
Step-by-step solution
In uniform circular motion, the speed of the particle is constant, but its direction of motion changes continuously. The linear acceleration (centripetal acceleration) is directed towards the center of the circular path. As the particle moves along the circle, the direction towards the center continuously changes in space. Since acceleration is a vector quantity, a change in its direction means the acceleration is varying, not constant. Therefore, Assertion (A) is not correct.
Reason (R) correctly states that the acceleration vector points towards the center and its direction continuously changes, which is a true statement.
Answer: Assertion (A) is not correct but Reason (R) is correct
Reason (R) correctly states that the acceleration vector points towards the center and its direction continuously changes, which is a true statement.
Answer: Assertion (A) is not correct but Reason (R) is correct