NEET Physics Distance Displacement and Uniform Motion MCQs Set A

a)

b)

c)

d)

Answer:

Question: The location of a particle has changed. What can we say about the displacement and the distance covered by the particle?

a) Neither can be zero

b) Both may be zero

c) One may be zero

d) One is +ve, other is –ve

Answer: Neither can be zero

Question: The displacement of a body is zero. The distance covered

a) may or may not be zero

b) depends upon the acceleration

c) is not zero

d) is zero

Answer: may or may not be zero

Question: In 1.0 s, a particle goes from point A to point B, moving in a semicircle of radius 1.0 m (see Figure). The magnitude of the average velocity is

a) 2.0 m/s

b) 3.14 m/s

c) 1.0 m/s

d) Zero

Answer: 2.0 m/s

Question: The numerical ratio of displacement to distance for a moving object is

a) always equal to 1

b) equal to or less than 1

c) always less than 1

d) always more than 1

Answer: always equal to 1

Question: Which of the following can be zero, when a particle is in motion for some time?

a) Displacement

b) None of these

c) Distance

d) Speed

Answer: Displacement

Question: If distance covered by a particle is zero, what can you say about its displacement?

a) It must be zero

b) It cannot be zero

c) It may or may not be zero

d) It is negative

Answer: It must be zero

Question: Which of the following is a one dimensional motion ?

a) Motion of train running on a straight track

b) Motion of satellite

c) Motion of air particle

d) Motion of snake

Answer: Motion of train running on a straight track

Question: The fig given shows the time-displacement curve of two particles P and Q. Which of the following statement is correct?

a) Both P and Q move with uniform speeds but the speed of P is more than the speed of Q

b) Both P and Q move with uniform speeds but the speed of Q is more than the speed of P.

c) Both P and Q move with uniform equal speed

d) P is accelerated Q is retarded

Answer: Both P and Q move with uniform speeds but the speed of P is more than the speed of Q

Question: A man of height h walks in a straight path towards a lamp post of height H with velocity v. Then velocity of the edge of the shadow on the ground will be

a)

b)

c)

d)

Answer:

Question: The distance travelled by a body is directly proportional to the time taken. Its speed

a) remains constant

b) decreases

c) increases

d) becomes zero

Answer: remains constant

Question: The slope of velocity-time graph for motion with uniform velocity is equal to

a) zero

b) final velocity

c) none of these

d) initial velocity

Answer: zero

More Questions.....................................

Question: The ratio of the numerical values of the average velocity and average speed of a body is

a) unity or less

b) less than unity

c) unity

d) unity or more

Answer: unity or less

Question: The slope of the tangent drawn on position-time graph at any instant is equal to the instantaneous

a) velocity

b) acceleration

c) force

d) momentum

Answer: velocity

Question: The displacement-time graphs of two particles A and B are straight lines making angles of 30º and 60º respectively with the time axis. If the velocity of A is v_A and that of B is v_B, the value of v_A/v_B is

a) 1/3

b) 1/2

c)

d)

Answer: 1/3

Question: What is the rate of change of velocity of an object in uniform motion ?

a) Always equal to zero

b) Always less than one

c) Always greater than one

d) Either less than or equal to one

Answer: Always equal to zero

Question: Choose the wrong statement from the following.

a) The speed in general is less than the magnitude of the velocity.

b) The slope of the displacement-time graph gives the velocity of the body

c) The area under the velocity-time graph gives the displacement of the body.

d) The motion of an object along a straight line is a rectilinear motion.

Answer: The speed in general is less than the magnitude of the velocity.

Question: An athlete completes one round of a circular track of radius R in 40 sec. What will be his displacement at the end of 3 min. 20 sec ?

a) Zero

b) 2 R

c)

d)

Answer: Zero

Question: Which of the following graph cannot possibly represent one dimensional motion of a particle?

a) All of these

b)

c)

d)

Answer: All of these

Question:  Consider the following statements and select the incorrect statements.
I. The magnitude of instantaneous velocity of a particle is equal to its instantaneous speed.
II. The magnitude of the average velocity in an interval is equal to its average speed in that interval.
III. It is possible to have a situation in which the speed of the particle is never zero but the average speed in an interval is zero.
IV. It is possible to have a situation in which the speed of particle is zero but the average speed is not zero.

a) II, III and IV

b) II and III

c) I and II

d) IV only

Answer: II, III and IV

Question: The total distance travelled by the body in the given time is equal to

a) the area which v – t graph encloses with time axis

b) the area which a – t graph encloses with axis

c) the area which x – t graph encloses with time axis

d) the area which v– t graph encloses with displacement axis

Answer: the area which v – t graph encloses with time axis

Question:  Choose the correct equation to determine distance in a straight line for a body with uniform motion.

a)

b)

c)

d)

Answer:

Question: A particle moves 2m east then 4m north then 5 m west. The distance is

a) 11 m

b) 10 m

c) –11 m

d) 5 m

Answer: 11 m

Question:  A body moves in straight line with velocity v₁ for 1/3rd time and for remaining time with v₂. Find average velocity.

a)

b)

c)

d)

Answer:

Question:  Select the incorrect statements from the following.
I. Average velocity is path length divided by time interval.
II. In general, speed is greater than the magnitude of the velocity.
III. A particle moving in a given direction with a nonzero velocity can have zero speed.
IV. The magnitude of average velocity is equal to the average speed.

a) I, III and IV

b) II and III

c) I and IV

d) I, II, III and IV

Answer: I, III and IV

Question:  A particle moves in straight line with velocity 6 m/s and 3 m/s for time intervals which are in ratio 1:2. Find average velocity.

a) 4 m/s

b) 5 m/s

c) 3 m/s

d) 2 m/s

Answer: 4 m/s

Question:  A particle moves from (2,3) m to (4,1) m. The magnitude of displacement is

a)

b)

c)

d) 2 m

Answer:

Question: Which of the following is not possible for a body in uniform motion?

a) Both

b) None of these

c)

d)

Answer:  Both

Question: A man leaves his house for a cycle ride. He comes back to his house after half-an-hour after covering a distance of one km. What is his average velocity for the ride ?

a) zero

b) 2 km h^–1

c) 10 km s^–1

d) None of these

Answer: zero

Question:  A point traversed half of the distance with a velocity v₀. The half of remaining part of the distance was covered with velocity v₁ & second half of remaining part by v₂ velocity. The mean velocity of the point, averaged over the whole time of motion is

a)

b)

c)

d)

Answer: