Q. The internal and external diameters of a hollow cylinder are measured with the help of a vernier calipers. Their values are 4.23 $\pm \ 0.01$ cm and 3.87 $\pm \ 0.01$ cm respectively. The thickness of the wall of the cylinder is
A) 0.36$\pm \ 0.02$ cm
B) 0.18$\pm \ 0.02$ cm
C) 0.36$\pm \ 0.01$ cm
D) 0.18$\pm \ 0.01$ cm
Explanation
Subtract 3.87 from 4.23 and then divide by 2.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.