Question

(b) Place the ruler in such a way that the 0 mark of the ruler lies at point A.​

Answer 1

Answer:

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.