Question

Mention the various precautions that you must keep in mind while taking measurements of the length of an object.​

Answer 1

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

If one end of the scale is broken at zero (0) mark then keep the pencil parallel to the scale touching it such that one of it ends coincides with the marking (1) on the scale. Note the number of the scale which coincides with the other end of the pencil. Now, subtract 1 from this number to get the length of the object.