Q 1945534463.     Answer the following :
(a) You are given a thread and a metre scale.
How will you estimate the diameter of the
thread?
(b) A screw gauge has a pitch of 1.0 mm and
200 divisions on the circular scale. Do
you think it is possible to increase the
accuracy of the screw gauge arbitrarily
by increasing the number of divisions on
the circular scale?
(c) The mean diameter of a thin brass rod :s
to be measured by Vernier callipers. Why
is a set of 100 measurements of the
diameter expected to yield a more reliable
estimate than a set of 5 measurements
only?