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Question 30

A spectrometer gives the following reading when used to measure the angle of a prism. Main scale reading: $$58.5$$ degree; Vernier scale reading: $$09$$ divisions. Given that $$1$$ division on main scale corresponds to $$0.5$$ degree. Total divisions on the vernier scale are $$30$$ and match with $$29$$ divisions of the main scale. The angle of the prism from the above data

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