JEE Main Physics question
A spectrometer gives the following reading when used to measure the angle of a prism: Main scale reading: degree; Vernier scale reading: 09 divisions. Given that 1 division on the main scale corresponds to 0.5 degree and that total divisions on the vernier scale is 30 and match with 29 divisions of the main scale, the angle of the prism from the above data is **[AIEEE 2012]**
Answer: (C)
Solution
Least count . Reading
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