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HCS (Haryana)Prelims2026General Studies
Question
Consider the following pairs : Graph | Represents 1. Horizontal velocity - time graph | Zero acceleration 2. A linear velocity - time graph with non-zero slope | Uniform motion 3. Curved distance - time graph | Non-uniform motion How many of the above pairs are correctly matched?
Options
- A Only one pair
- B Only two pairs
- C All three pairs
- D None of the pairs
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Correct Answer
B Only two pairs
Model Answer
- In a velocity-time graph the slope gives the acceleration. A horizontal, that is a straight line parallel to the time axis, velocity-time graph means that the velocity is constant and the acceleration is zero. Hence, pair 1 is correctly matched.
- A straight line velocity-time graph with a non-zero slope indicates that the velocity is changing at a constant rate, that is, the body is moving with uniform acceleration and not with uniform motion. Hence, pair 2 is not correctly matched.
- In a distance-time graph the slope gives the speed. A curved distance-time graph shows that the speed is changing, that is, the motion is non-uniform. Hence, pair 3 is correctly matched.
- Therefore, only two pairs are correctly matched.