Question

state the precautions which should be taken while using a metre scale to measure the length of an object.

Answer 1

Some precautions must be taken while using a metre scale to measure the length of an object : -

1. Our eye should be vertically abvove the point, where the measurement is to be taken.

2. For proper measurement, Keep the ruler exactly along the length , for the measurement.

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Answer 2

1 place the scale in contact with the object along its length starting from 0. if the zero mark is not clear use any other full mark of the scale.
2 your eye must be exactly in front of the point where the measurement is to be taken.