JEE Main 2021 · PhysicsMultiple choiceDiagram basedEasyData or graph
JEE Main 24 February 2021, Shift 1, Physics Q8
Question 8 of 90 in this shift, Physics question 8 of 30, Section A.
If the velocity-time graph has the shape AMB, what would be the shape of the corresponding acceleration-time graph ?
The figure, in words
v-t graph: V on the vertical axis, time(t) on the horizontal axis. Point A is on the V-axis above the time axis and point B is at the right end at the same height as A (joined by a dotted horizontal line). A straight line goes down from A, crossing the time axis, to the lowest point M below the axis at the middle, then a straight line goes up from M, crossing the time axis, to B. Vertical lines are drawn at equal intervals.- (1)[figure: a-t graph; acceleration constant at a negative value for the first half of the time axis, then jumps to a constant positive value for the second half and stays there]Official answer
- (2)[figure: a-t graph; smooth sine-like curve starting at origin, dipping below the t-axis, crossing it, rising above the axis to a peak and returning to the axis]
- (3)[figure: a-t graph (a has a vector arrow); square wave alternating between a negative level and a positive level, with several steps]
- (4)[figure: a-t graph (a has a vector arrow); triangular shape rising linearly from the origin to a peak and then falling linearly to the t-axis]
Official answer
Option 1
NTA final key.
- Chapter
- Motion in a Straight Line
- Topic
- Kinematics in 1D
- Idea tested
- Kinematic Graph Conversion