AIIMS 2019 Physics Graphs of Motion MCQ Question
Assertion: The position-time graph of a uniform motion in one dimension of a body can have negative slope.
Reason: When the speed of body decreases with time, the position-time graph of the moving body has negative slope.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The statement in option B accurately reflects the principles of kinematics, where a negative slope on a position-time graph indicates motion in the negative direction, while a decreasing slope signifies a reduction in speed, indicating that the body is slowing down. This aligns with the concept that the slope of a position-time graph represents velocity; thus, a less steep negative slope corresponds to a decrease in the magnitude of negative velocity. Other options are not applicable or do not provide relevant information to the question, making them incorrect. Understanding these relationships helps in analyzing motion effectively in physics.
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