Question

A micrometer has 150 equal
divisions on the circular scale,
and on one full rotation of
circular scale main scale advances by
0.02 cm on the main scale. The least
count of the
micrometer (in cm) is​

Answer 1

Answer:

Explanation:

Given : A micrometer has 150 equal divisions on the circular scale, and on one full rotation of  circular scale main scale advances by 0.02 cm on the main scale.

To Find : The least count of the  micrometer (in cm) is

Solution:

micrometer has 150 equal divisions on the circular scale, and on one full rotation of  circular scale main scale advances by 0.02 cm on the main scale.

1 main Scale = 150 Vernier scale Divisions

1 main Scale =  0.02 cm

150 Divisions = 0.02 cm

=> 1 Vernier scale Divisions = 0.02/150  cm

=>  1 Vernier scale Divisions = 2/15000  cm

=>  1 Vernier scale  Divisions = 2/(1.5 x 10⁴)   cm

=> 1 Vernier scale  Divisions = 1.33 x 10⁻⁴  cm