Define relative error and percentage error?

The length and breadth of a rectangular object are 25.2 cm and 16.8 cm respectively and have been measured to an accuracy of 0.1 cm. Find the relative error and percentage error in the area of the object.

The focal length of a convex lens was measured a number of time.s The mean focal length was found to be 10.41 cm. If the mean absolute error in the value of focal length is 0.13 cm. Calculate the relative error and the percentage error.

The readings of a length come out to be 2.63 m , 2.56 m , 2.42 m , 2.71 m and 2.80 m . Calculate the absolute errors and relative errors or percentage errors.

The diameter of a wire as measured by a screw gauge was found to be 0.026 cm, 0.028 cm, 0.029 cm, 0.027cm, 0.024cm and 0.027 cm. Calculate (i) mean value of diameter (ii) mean absoulte error (iii) relative error (iv) percentage error. Also express the result in terms of absolute error and percentage error.

Explain absolute error, mean absolute error and percentage error.

The length of a cylinder was measured using a vernier calipers several times. The following reading were obtained (in cm) : 1.12, 1.11,1.13, 1.10,1.14,1.15,1.16. Calculate (i) mean value of the length (ii) the absolute error in each measurement (iii) mean absolute error (iv) relative error and (v) percentage error. Write down the result in terms of mean absolute error and percentage error.

In an experiment the refractive index of glass was observed to be 1.45 , 1.56 , 1.54 , 1.44 , 1.54 , and 1.53 . Calculate (a). Mean value of refractive index (b). Mean absolute error ( c ) Fractional error (d) Percentage error (e) Express the result in terms of absolute error and percentage error

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.

If the percentage errors in measuring mass and velocity of a particle are respectively 2% and 1% percentage error in measuring its kinetic energy isp

The lengths of sides of a cuboid are a, 2a and 3a. If the relative percentage error in the measurement of a is 1% , then what is the relative percentage error in the measurement of the volume of the cuboid.