JEE (Main) Physics - Kinematics MCQs (31 to 45)

31. Which of the following is the correct interpretation of a straight line with a positive slope in a velocity-time graph?

A. The object is at rest
B. The object is moving with constant velocity
C. The object is moving with uniform acceleration
D. The object is moving with increasing velocity
Answer: C. The object is moving with uniform acceleration

32. In a velocity-time graph, the area under the curve represents:

A. Velocity of the object
B. Displacement of the object
C. Acceleration of the object
D. Speed of the object
Answer: B. Displacement of the object

33. What does the slope of a position-time graph represent?

A. Acceleration
B. Velocity
C. Displacement
D. Speed
Answer: B. Velocity

34. For an object moving with uniform acceleration, the velocity-time graph is:

A. A straight line parallel to the time axis
B. A straight line with a positive slope
C. A curve increasing exponentially
D. A parabola
Answer: B. A straight line with a positive slope

35. Which of the following relations is correct for uniformly accelerated motion?

A. v = u + at
B. v² = u² + 2as
C. s = ut + (1/2)at²
D. All of the above
Answer: D. All of the above

36. The slope of a velocity-time graph gives:

A. Distance
B. Speed
C. Acceleration
D. Displacement
Answer: C. Acceleration

37. For an object in uniformly accelerated motion, the position-time graph is:

A. A straight line with a positive slope
B. A parabola opening upwards
C. A horizontal line
D. A hyperbola
Answer: B. A parabola opening upwards

38. What does the area between the velocity-time curve and the time axis represent?

A. Velocity
B. Speed
C. Displacement
D. Acceleration
Answer: C. Displacement

39. If two objects are moving in opposite directions with equal velocities, their relative velocity is:

A. Zero
B. The sum of their velocities
C. The difference of their velocities
D. The average of their velocities
Answer: B. The sum of their velocities

40. The equation v = u + at represents the relationship between velocity, initial velocity, acceleration, and time for which type of motion?

A. Non-uniform motion
B. Uniform motion
C. Uniformly accelerated motion
D. Uniform circular motion
Answer: C. Uniformly accelerated motion

41. If the velocity-time graph is a horizontal line, it implies:

A. Uniformly accelerated motion
B. Motion with variable speed
C. Rest
D. Uniform motion
Answer: D. Uniform motion

42. Which of the following is true for relative velocity?

A. It is always positive
B. It is the velocity of one object as seen from another object
C. It is the same in all frames of reference
D. It does not depend on the direction of motion
Answer: B. It is the velocity of one object as seen from another object

43. For an object in uniform circular motion, the velocity-time graph is:

A. A straight line
B. A curve
C. A sinusoidal wave
D. Undefined
Answer: D. Undefined

44. The equation s = ut + (1/2)at² gives the displacement of an object in:

A. Uniform motion
B. Uniformly accelerated motion
C. Non-uniform motion
D. Circular motion
Answer: B. Uniformly accelerated motion

45. If the relative velocity between two objects moving in the same direction is zero, it means:

A. They are at rest with respect to each other
B. They are moving at the same speed in the same direction
C. One is moving faster than the other
D. They are at rest in an absolute sense
Answer: B. They are moving at the same speed in the same direction

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JEE (Main) Physics - Kinematics MCQs (31 to 45)

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