Write rule for error produced in result due to addition and subtraction of error.

Write rule for error in result due to multiplication and division

Define fractional error.

Write a note on combination of error.

Write rules of "Round off" numbers.

Write type or error in measurement of physical quantity and explain.

Following observations were taken with a vernier callipers while measuring the length of a cylinder : 3.29 cm,3.28 cm,3.31 cm,3.28 cm,3.27 cm,3.29 cm,3.20 cm . Then find : (a) Most accurate length of the cylinder (b) Absolute error in each observation (c) Mean absolute error (d) Relative error (e) Percentage error Express the result in terms absolute error and percentage error.

What is called as relative error ?

Zero error of an instrument introduces