JEE Main 2010 Physics question on Experimental Physics
A vernier calipers has 1 mm marks on the main scale. It has 20 equal divisions on the vernier scale which match with 16 main scale divisions. For this vernier calipers, the least count is
A.
0.02 mm
B.
0.05 mm
C.
0.1 mm
D.
0.2 mm
Show answer and solution
Correct option: D
Solution
20 vernier divisions = 16 main scale divisions, so 1 vernier division = 16/20 = 0.8 mm. Least count = 1 main scale division − 1 vernier division = 1 mm − 0.8 mm = 0.2 mm.
[AIEEE 2010]
Practise Experimental Physics the way it is asked
A timed set of real JEE Main Experimental Physics questions, graded as the exam grades. No sign-up.
