Length

Q. A person sitting in a moving train is _______ with respect to co-passengers and _______ with respect to a person standing outside the train.

1. in motion, at rest
2. in motion, in motion
3. at rest, at rest
4. at rest, in motion

Q. What are speedometer and odometer? Describe.

Q. Name the device used in car to measure:
a). how fast you are travelling.
b). distance travelled.

Q.

The thickness of a dozen coins on a metre scale was found to be 18cm. What is the thickness of one coin?

1. $15cm$.

2. $1.2cm$.

3. $1.8mm$.

4. $15mm$.

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

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

Q. Consider the following statements and choose the incorrect one:

1. Fortnight, month, and season are units for measuring time.
2. Odometer is an instrument used for measuring the distance travelled by a vehicle.
3. Time is the only factor that determines how fast a body is.
4. Speedometer is an instrument that measures the speed of a vehicle.

Q. Anil's father has three different wires which vary in lengths.
J: 12 cm
K: 2.8 m
L: 203 mm
Which of the following options shows the arrangement of the wires from the longest to the shortest?

1. $L>J>K$
2. $K>L>J$
3. $J>L>K$
4. $K>J>L$

Q. What is a periodic motion? Give any two examples.
[2 marks]

Q. Identify the device that is used to measure how fast a vehicle is moving.

1. Sundial
2. Thermometer
3. Speedometer
4. Odometer

Q.

Anil's father has three different wires which vary in lengths.
J: 12 cm
K: 2.8 m
L: 203 mm
Which of the following options shows the arrangement of the wires from the longest to the shortest?

1. $K\to J\to L$
2. $K\to L\to J$
3. $L\to J\to K$
4. $J\to L\to K$

Q. Match the following quantities with their measuring devices.

1. Speedometer
2. Sand clock
3. Odometer

Q. _________ measures speed of a moving body whereas _______ measures distance covered by a moving body.​

1. 
   Odometer, thermometer
2. 
   Odometer, speedometer
3. 
   Speedometer, thermometer
4. 
   Speedometer, odometer

Q. Match the following quantities with their measuring devices.

1. Sand clock
2. Odometer
3. Speedometer

Q. Arrange the following values in ascending order.

1. $500$ cm
2. $0.6$ km
3. $3$ km
4. $5000$ m

Q. Match the following quantities with their measuring devices.

1. Speedometer
2. Odometer
3. Sand clock

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

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

Q. _________ measures speed of a moving body whereas _______ measures distance covered by a moving body.​

1. 
   Odometer, thermometer
2. 
   Odometer, speedometer
3. 
   Speedometer, thermometer
4. 
   Speedometer, odometer

Q. If the speed of a vehicle is said to be $50m{s}^{-1}$ and the time taken to travel a certain distance is 10 s, then find the distance travelled?

1. 500 m
2. 5 m
3. 25 m
4. 50 m