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JEE Mains 29-Jan-2023 Shift 2 Solved Paper

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Question : 23

Total: 90

In an experiment of measuring the refractive index of a glass slab using travelling microscope in physics lab, a student measures real thickness of the glass slab as 5.25‌mm and apparent thickness of the glass slab at 5.00‌mm. Travelling microscope has 20 divisions in one cm on main scale and 50 divisions on Vernier scale is equal to 49 divisions on main scale. The estimated uncertainty in the measurement of refractive index of the slab is ‌

×10−3, where x is ________

[29-Jan-2023 Shift 2]

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