Question

3.
State the precautions which should be taken while using a scale to measure the length of
an object (like a postcard).​

Answer 1

Answer:

The precautions to be taken while using a meter scale to measure lengths are as follows : (1) The scale should be placed to the side of the object being measured. It should also be in touch with the object being measured. (2) While reading the scale, eye must be placed vertically above the scale mark being read.

Answer 2

Explanation:

To measure length with scale we should,

1. Keep the ruler exactly along the length to be measured.

2.Avoid using worn out portions of the ruler.

3. Keep the eye vertically above the point where the measurement is to be taken.