Question

A 30cm scale has one end broken .The mark at the broken end is 2.6cm , how would you use it to measure the length of your pencil , explain?

Answer 1

Answer:

The mark at the broken end is 2.6 cm. So, we will use the scale from the next full mark i.e. 3 cm. We now measure the length of the pencil by keeping the 3 cm mark of the scale at its left end. The 3 cm value is then subtracted from the scale reading at the right side end of the pencil to obtain the correct length of the pencil.