The instrument installed in a car for measuring the distance travelled by the car is called :

Options

A. barometer
B. speedometer
C. anemometer
D. odometer

Answer

To solve the question about the instrument installed in a car for measuring the distance traveled, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Purpose of the Instrument**: We need to determine which instrument is specifically designed to measure distance traveled by a vehicle.

2. **Consider the Options Provided**:
- **Air Barometer**: This instrument measures air pressure, not distance.
- **Speedometer**: This instrument measures the speed of the vehicle at a particular moment, not the total distance traveled.
- **Anemometer**: This instrument measures wind speed and direction, which is unrelated to vehicle distance.
- **Odometer**: This instrument is specifically designed to measure the total distance traveled by a vehicle.

3. **Select the Correct Instrument**: Based on the functions of the instruments listed, the odometer is the correct choice as it measures the distance traveled by the car.

4. **Conclusion**: Therefore, the instrument installed in a car for measuring the distance traveled by the car is called an **odometer**.

### Final Answer:
The instrument installed in a car for measuring the distance traveled by the car is called an **odometer**.

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