Motion and Measurement Test

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Motion and Measurement Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following options is an example of a rectilinear motion?

A
Moon revolving around the Earth

B
Falling of a stone

C
Motion of a child on a swing

D
Vibrating strings of a guitar

Solution

Moon revolving around the Earth - Circular motion and Periodic motion
Falling of a stone - Rectilinear motion
Motion of a child on a swing - Periodic motion
Vibrating strings of a guitar - Periodic motion
Question 2
1 / -0

Ankit uses a broken protractor which starts at 35° and uses it to measure an angle. What will be the actual angle, if his observed reading on the protractor is 245°?

A
189°

B
210°

C
235°

D
269°

Solution

The protractor starts from 35°. So, the actual reading will be 35° less than the observed reading = 245°- 35° = 210°.
The answer is 210°.
Question 3
1 / -0

The height of a child in kindergarten is 50 cm.How much will the height of the child be in meters ?

A
0.05 m

B
0.5 m

C
5 m

D
50 m

Solution

100 cm = 1 m

1 cm = 1/100 m

50 cm = 50 /100 = 0.5 m

Height of the child will be 0.5 m.

Question 4

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 5
1 / -0

Which two activities are the examples of rectilinear motion?

A
Moving housefly and heart beat

B
Moving fan and moving car

C
Motion of carom-men and bullet fired from gun

D
Crawling snake and flying flies

Solution

Movement of housefly and crawling snake - Random motion
Moving fan - Circular motion
Movement of carrom-men, bullet fired from a gun and moving car - Rectilinear motion
Heartbeat - Periodic motion
Question 6
1 / -0

While measuring the length of a pencil, the reading of the scale at one end is 4.0 cm and that at the other end is 10.6 cm. What is the length of the pencil?

A
6.6 cm

B
11.6 cm

C
14.6 cm

D
9.6 cm

Solution

The length of the pencil = (10.6 - 4.0) cm = 6.6 cm
Question 7
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 8

1 / -0

Which of the following options correctly matches the objects listed in column I with the type of motion possessed by them as listed in the column II?

Column I	Column II
(1) Blades of a fan	(A) Periodic motion
(2) Vehicles moving on a straight road	(B) Circular motion
(3) Strings of a guitar	(C) Both rotational and rectilinear motion
(4) A ball rolling on the ground	(D) Rectilinear motion
	(E) Rotational motion

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

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

1 - E, 2 - D, 3 - C, 4 - E

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

Solution

Blades of a fan - Circular motion
Vehicle moving on a straight road - Rectilinear motion
Strings of a guitar - Periodic motion
A ball rolling on the ground - Both rotational and rectilinear motion

Question 9
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 10
1 / -0

The motion of the wheel of a cycle is

A
rectilinear

B
rotatory

C
translatory

D
translatory and rotatory

Solution

Wheel of the cycle is rotating around the centre of mass and the centre of mass of the wheel has covered a certain distance. Hence, the motion of the wheels of the cycle is translatory as well as rotatory.
Question 11
1 / -0

Which among the following is an example of oscillatory motion?

A
Motion of train on railway tracks

B
Child on a swing

C
Soldiers in a march past

D
Ball falling from a building

Solution

Child on a swing is an example of oscillatory motion. They move to and fro about their position at rest. This to and fro motion of an object about the position of rest is called oscillatory motion.

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Motion and Measurement Test - 3

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Motion and Measurement Test - 3

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Question 1

Moon revolving around the Earth

Falling of a stone

Motion of a child on a swing

Vibrating strings of a guitar

Solution

Question 2

189°

210°

235°

269°

Solution

Question 3

0.05 m

0.5 m

5 m

50 m

Solution

Question 4

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

Question 5

Moving housefly and heart beat

Moving fan and moving car

Motion of carom-men and bullet fired from gun

Crawling snake and flying flies

Solution

Question 6

6.6 cm

11.6 cm

14.6 cm

9.6 cm

Solution

Question 7

only rectilinear

only periodic

both rectilinear and periodic

neither rectilinear nor periodic

Solution

Question 8

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

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

1 - E, 2 - D, 3 - C, 4 - E

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

Solution

Question 9

Elevator

Potter's wheel

Turning of merry-go-round

Spinning of tub in a washing machine

Solution

Question 10

rectilinear

rotatory

translatory

translatory and rotatory

Solution

Question 11

Motion of train on railway tracks

Child on a swing

Soldiers in a march past

Ball falling from a building

Solution

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