Length

Q.

What does the following device measure in car (1) odometer (2) speedometer?

Q.

State whether the given statement is true or false -

The speedometer is an instrument used to measure the distance traveled by a vehicle whereas the odometer is used to measure the speed of a vehicle.

1. True

2. False

Q.

Differentiate between periodic and non-periodic motion.

Q.

A wheel of a bicycle has more than one type of motion. Explain

Q.

What is the full form of “ CBM”?

Q.

SI unit of length is:

1. kilometre

2. centimetre

3. metre

4. millimetre

Q.

Why do we use standard unit of length for measurements?

Q. Which of the following device is used to record the distance travelled by a vehicle?

1. Manometer
2. Odometer
3. Barometer
4. Anemometer

Q.

What does the speedometer of a car measure?

Q. In which of the following cases of motions, the distance moved and the magnitude of displacement are equal ?

1. A car moving on a straight road
2. A car moving in a circular path
3. A pendulum moving to and fro
4. The Earth revolving around the Sun

Q.

Express as $\mathrm{cm}$ using decimals:

$5\mathrm{mm}$.

Q.

The SI unit of length is ___ .

1. metre

2. centimetre

3. kilometre

4. millimetre

Q.

Write one example for each of the following types of motion.

1. Rectilinear
2. Circular
3. Periodic
4. Circular and periodic

Q.

What is the length? Name four early units of measurement of length.

Q.

What is the unit of length used for measuring the length of the gangs river

Q.

State whether true or false. The rotation of the moon around the earth is a periodic motion.

1. True
2. False

Q. The measure of warmth or coldness of a substance or an object is called its .

1. temperature
2. length
3. volume
4. time

Q.

Which of the following is/are required to measure the length accurately?

1. Number

2. Unit

3. Both A and B

4. Either A or B

Q. Arrange the units of length in their ascending order.

1. $5m<5km<5mm$.
2. $5m>5km>5mm$.
3. $5mm<5m<5km$.
4. $5mm>5m>5km$.

Q.

In which of the following cases, the distance and the magnitude of displacement are equal ?

1. A car moving on a straight road
2. A car moving in a circular path
3. A pendulum moving to and fro
4. The Earth revolving around the Sun

Q.

The length of your footstep cannot be used as a unit of length as it is not consistent for everyone.

1. False

2. True

Q.

Fill in the blank with a suitable unit of measure

The height of my school building is $120$ ___

Q.

Arrange the below measurements in ascending order.

5 km, 5 mm and 5 m.

1. $5mm<5m<5km$.

2. $5mm>5m>5km$.

3. $5m<5km<5mm$.

4. $5m>5km>5mm$.

Q.

A 1 m rod has 4 points marked as given in the figure. Let OA = X. If each segment is of equal measure, then what will be the measure of X?

1. 2 m

2. 2000 mm

3. 20 cm

4. All of these

Q. The diameter of a metal pin was found to be 0.002 m. Choose the correct option that expresses the diameter in centimetre and millimetre, respectively. ​

1. 2 cm ; 2 mm​
2. 20 cm ; 0.2 mm​
3. 0.2 cm ; 0.2 mm​
4. 0.2 cm; 2 mm​

Q.

A wheel of a bicycle has more than one type of motion. Explain

Q.

Compare the following measurements and add $<,>or=$ symbol.

$4.5m\_\_\_\_\_\_150cm$

Q.

Express the following as centimetre (cm) using decimals.

$18$ mm

Q. I am an ancient unit of measuring length. I am measured from the tip of the little finger all the way to the tip of the thumb along the palm.

Who am I?

1. Cubit
2. Handspan
3. Inch
4. Palm

Q.

The length of a foot changes from person to person.

1. False

2. True