Motion and Measurement Test

Result

Motion and Measurement Test - 2

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Question 1

1 / -0

Match the following.

Column I	Column II
(1) Hands of the clock	(A) periodic motion
(2) Train moving on a track	(B) rotaional motion
(3) Rocking chair	(C) circular motion
(4) Wheel of a cycle	(D) linear motion

1 - D, 2 - B, 3 - C, 4 - A

1 - A, 2 - D, 3 - C, 4 - B

1 - C, 2 - D, 3 - A, 4 - B

1 - C, 2 - A, 3 - D, 4 - B

Solution

Hands of clock move in circular motion.
Train moves in linear motion.
Rocking chair moves in periodic motion.
Wheel of a cycle moves in rotational motion.

Question 2
1 / -0

Sonam moves on a straight road from point X to point Z. She takes 20 minutes to cover a certain distance XY and 30 minutes to cover rest of the distance YZ. She then turns back and takes 30 minutes to cover the distance ZY and 20 minutes to cover rest of the distance to her starting point. She makes 5 rounds on the road the same way. Paheli concludes that Sonam's motion is

A
only rectilinear

B
only periodic

C
both rectilinear and periodic

D
neither rectilinear nor periodic

Solution

As Sonam moves from point X to point Z and back from point Z to point X in a straight line; so we can say her motion is a rectilinear motion. She repeats the trip five times; so it is an example of periodic motion. Hence, her motion is both rectilinear and periodic.
Question 3
1 / -0

Which of the following does not possess a rotational motion?

A
Elevator

B
Potter's wheel

C
Turning of merry-go-round

D
Spinning of tub in a washing machine

Solution

Rotation of wheel, movement of merry-go-round, spinning of tub in a washing machine are all the examples of rotational motion as all bodies are moving around a fixed central axis through themselves except the motion of an elevator, which is a type of translatory motion.
Question 4
1 / -0

To measure the length of a curved line, you will use

A
a thread

B
a geometry scale

C
a divider

D
Both (1) and (3)

Solution

We can use a thread to measure curved line. First, take a thread and put it on the curved line such that it coincides with the curved line and now measure the length of the thread using a scale.
Question 5
1 / -0

Rahul was measuring the length of his pencil box with his broken scale. He put a 1.5 cm mark on the scale at one end and noted down the reading at the other end, which came out to be 14.9 cm. The length of his pencil box was

A
14.9 cm

B
13.9 cm

C
13.4 cm

D
12.4 cm

Solution

Length of the pencil box = 14.9 - 1.5 = 13.4 cm