In an experiment the angles are required to be measured using an instrument. 29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale. If the smallest division of the main scale is half-a-degree ( 0.5°), then the least count of the instrument is:
Text Solution
Verified by ExpertsThe correct answer is:
D
29 division of main scale coincides with 30 divisions of vernier scale Hence one division of vernier scale
= 
of main scale
= 
= 
min
= 1 min.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The period of oscillation of a simple pendulum is given by where l is about 100 cm and is known to…
The percentage errors in the measurement of mass and speed are 2% and 3% respectively. How much wil…
The random error in the arithmetic mean of 100 observations is x ; then random error in the arithme…
Error in the measurement of radius of a sphere is 1%. The error in the calculated value of its volu…
The mean time period of second 's pendulum is 2.00 s and mean absolute error in the time period is …
A body travels uniformly a distance of (13.8 ± ± 0.2) m in a time (4.0 ± ± 0.3) s. The velocity of …