Physics
Assertion (A) : The velocity-time graph of a body in motion can be a straight line parallel to the time axis.
Reason (R) : This is because the motion of body is with non-uniform velocity.
- Both A and R are true and R is the correct explanation of A
- Both A and R are true and R is not the correct explanation of A
- Assertion is false but reason is true
- Assertion is true but reason is false
Motion in One Dimension
3 Likes
Answer
Assertion is true but reason is false
Explanation
Assertion (A) is true because a straight line parallel to the time (x) axis implies same velocity at all times so this happens when the velocity remains constant over time, i.e., uniform velocity.
Reason (R) is false because a horizontal velocity-time graph (parallel to the time axis) indicates uniform velocity not non-uniform velocity which shows the velocity doesn’t change with time.
Hence, assertion is true but reason is false.
Answered By
1 Like
Related Questions
Assertion (A) : For a given time interval, average velocity and average speed can have different values.
Reason (R) : Speed is a scalar quantity whereas velocity is a vector quantity.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Assertion (A) : The slope of displacement-time graph gives the velocity.
Reason (R) : Velocity is the product of displacement and time.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Assertion (A) : The acceleration-time graph of а body is a straight line parallel to time axis.
Reason (R) : This depicts the motion of freely falling body under gravity.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Assertion (A) : Acceleration of a moving body is always positive.
Reason (R) : Acceleration is the rate of change of velocity with time.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false