The variation of quantity A with quantity B is plotted in the fig. Describes the motion of a particle in a straight line.
(a) Quantity B may represent time.
(b) Quantity A is velocity if motion is uniform.
(c) Quantity A is displacement if motion is uniform
(d) Quantity A is velocity if motion is uniformly accelerated.

Options

A. Quantive B may represent time
B. Quantity A is velocity if motion is uniform
C. Quantity A is displacement if motion is uniform
D. Quantify A is velocity if motion is uniformly acclerated

Answer

A, C, D

Explanation

When we are calculating velocity of a displacement-time graph we have to take slope similarly we have to take slope of velocity-time graph to calculate accelration. When slope is constant motion wil be uniform .
When we are representing motion by a graph it may be displacement -time velocity-time or aceelration-time hence. B may represent time. For uniform motion velocity-time graph should will be a stright line parallel to time axis. For uniform motion velocity is constant hence, slope will be positive. Hence quantity A is displacement.
For uniformaly accelerated motion slope will be positive and A will represent velocity.