Question

What does the odometer of an automobile measure?
(A). Speed
(B). Distance
(C). Acceleration
(D). All

Answer 1

- Hint: As we know that an odometer is a device used in automobiles and we need to know why the device used for. For this we will first know the definition of odometer and then we will see how the device works.

Complete step-by-step solution -

The odometer may be defined as a device or an instrument which is used for the measurement of the distance travelled by a vehicle, such as a bicycle or car. An odometer device may be a mechanical device or electronic device depending upon the type of components used in the device. It may be the combination of both electronic and mechanical (electromechanical devices). The other name of an odometer is “odograph”.
Thus an odometer measures the total distance travelled by the vehicles from the starting point to the destination point.
Hence the correct option is “B”.

Additional Information-
Distance- It is the actual length of path covered not the shortest distance between any points (displacement).
Odometer measures the distance by counting the number of rotations of the wheel, and then multiplying it with the circumference of the wheel i.e. pi (3.14) times the diameter.

Note- Nowadays, most of the modern vehicles include a trip meter. Unlike the odometer, a trip meter can be reset at any point in a journey. With the help of this we will be able to record the distance of our particular journey. Speedometer is also fitted just above the odometer which measures the instantaneous speed of the vehicles.