Physics · 2022
JEE Main · 26 June 2022, Shift 2 · Q59
A travelling microscope is used to determine the refractive index of a glass slab. If 40 divisions are there in 1 cm on main scale and 50 Vernier…
A travelling microscope is used to determine the refractive index of a glass slab. If $\displaystyle 40$ divisions are there in $\displaystyle 1$ cm on main scale and $\displaystyle 50$ Vernier scale divisions are equal to $\displaystyle 49$ main scale divisions, then least count of the travelling microscope is
\_\_\_\_ $\displaystyle \times 10^{-6} m$.
Official answer
5
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