Jee Main
Units And Measurements
JEE Main 2022 (Online) 26th June Evening Shift
INTEGER+4 / -12022
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 scale divisions are equal to 49 main scale divisions, then least count of the travelling microscope is __________ \(\times\) 10\(-\)6 m.