Question

How will you find the thickness of a one rupee coin?

Answer 1

Since you have not mentioned the instrument you are using to measure the thickness, I will tell you how to find the thickness using different instruments.

1. Take 10 coins and measure their combined thickness.

Then divide the total thickness by the number of coins.

2. Measure the thickness using a vernier calliper.

Watch a video on youtube to know how it works.

3. A screw gauge can be used to measure the thickness as well.

Answer 2

Answer

Step 1 : The Pitch, Least count and the type of zero error of the screw gauge are determined.

Step 2 : The given coin is placed in between two studs.

Step 3 : The head screw using the ratchat arrangement is freely rotated until given one rupee coin is held firmly, but not tightly.

Step 4 : Pitch scale reading (PSR) by the head scale and head scale coincidence (HSC) with are axis of the pitch scale are found.

Step 5 : The reading are recorded and the experiment for different positions of the given coin is repeated.

Step 6 : The thickness of the coin is computed using the formula P.S.R + (HSC x L.C )