Motion and Measurement Test

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Motion and Measurement Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

The height of a boy is 163 cm. What is his height in metres?

A
0.163 m

B
16300 m

C
1.63 m

D
163 m

Solution

1 m = 100 cm
163 cm = = 1.63 m
Question 2
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 3
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 4
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 5

1 / -0

Match the following.

Column I	Column II
(1) Hands of the clock	(A) periodic motion
(2) Train moving on a track	(B) rotational 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

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

Solution

Hands of clock move in circular motion. ( because its bath is round)
Train moves in linear motion.(because it moves in straight line)
Rocking chair moves in periodic motion. (because it repeats its motion)
Wheel of a cycle moves in rotational motion. (because it rotates in a circular path)

Question 6
1 / -0

Which of the following can be measured on the given measuring scale?

A
0.21 m

B
0.10 m

C
0.25 m

D
0.28 m

Solution

We can measure 15 cm with the help of the given scale so the quantity which can be measured by this scale should be less than 10 cm.
Hence we can measure 10 cm or 0.10 m
Question 7
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 8
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 9
1 / -0

Four pieces of wooden sticks A, B, C and D are placed along the length of a 15 cm long scale, as shown in the figure. Which one of them is 2.3 cm in length?

A
A

B
B

C
C

D
D

Solution

Length of stick A is 2.8 cm - 0.5 cm = 2.3 cm
Question 10
1 / -0

Three students A, B and C took measurement from different positions, as shown in the figure. The most accurate measurement will be taken by

A
student A

B
student B

C
student C

D
students A and C

Solution

Correct position of eye is very important for taking measurement. The eye must be exactly infront of the point where the measurement is to be taken. Thus, position of student 'B' as shown in the figure, is the correct position of the eye.
Question 11
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 12

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 13
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 14
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 15
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 - 5

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Motion and Measurement Test - 5

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Question 1

0.163 m

16300 m

1.63 m

163 m

Solution

Question 2

Moon revolving around the Earth

Falling of a stone

Motion of a child on a swing

Vibrating strings of a guitar

Solution

Question 3

189°

210°

235°

269°

Solution

Question 4

0.05 m

0.5 m

5 m

50 m

Solution

Question 5

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

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

Solution

Question 6

0.21 m

0.10 m

0.25 m

0.28 m

Solution

Question 7

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 8

6.6 cm

11.6 cm

14.6 cm

9.6 cm

Solution

Question 9

A

B

C

D

Solution

Question 10

student A

student B

student C

students A and C

Solution

Question 11

only rectilinear

only periodic

both rectilinear and periodic

neither rectilinear nor periodic

Solution

Question 12

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