Question

Which of the following is true for spirit level?

(a) The tube is completely filled with the liquid

(b) The Liquid almost fills the tube

(c) One-fourth part of the tube is filled with liquid

(d) One-tenth part of the tube is filled with liquid

I had been asked this question during an interview.

I would like to ask this question from Spirit Level in portion Linear Measurements of Engineering Metrology

Answer 1

Right answer is (b) The Liquid almost fills the tube

To explain: The glass tube of spirit level is almost filled by liquid, there is a bubble at the highest position of the tube. The movement of the bubble along the tube radius depends upon the angle of tilt.