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 - Physics MCQ AIEEE 2009 2026 | ExamTest.live

mediumMCQAIEEE 20092026Physics

1 mark

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^{\circ}), then the least count of the instrument is:

Solution & Step-by-step Explanation

Least Count (LC) = 1 MSD - 1 VSD .Given: 30 VSD = 29 MSD ⟹ 1 VSD = \frac{29}{30} MSD . LC = 1 MSD - \frac{29}{30} MSD = \frac{1}{30} MSD Given 1 MSD = 0. 5^{\circ} = 3 0^{'} . LC = \frac{1}{30} \times 3 0^{'} = 1 minute

Try it yourself before checking the explanation above.

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^{\circ}), then the least count of the instrument is:

one minute

half minute

one degree

half degree

Practice with timed mock tests and track your performance across Physics.