Units and Measurement Quiz 2

Accuracy of measurement is determined by

Zero error of an instrument introduces .

The diameter of the paper pin is measured accurately by using _____

The number of significant figures in 11.118 × $10^{-6}$ is

0.00849 contains ___________ significant figures.

In the given options, the secondary fundamental unit is

The Earth’s radius is 6371 km. The order of magnitude of the Earth’s radius is

_____ is the smallest measurement that can be made using the given instrument

The main scale of a vernier callipers has n divisions/cm. n divisions of the vernier scale coincide with (n – 1) divisions of main scale. The least count of the vernier callipers is,

A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference leveL If screw gauge has a zero error of— 0.004 cm, the correct diameter of the ball is