1.There are 10 divisions on a Vernier which coincide with 9 divisions on the main scale and one cm on the main scale is divided into 10 parts . Find the least count of the Vernier. In a certain observation, the zero of the Vernier lies between 1.8 cm and 1.9 cm on the main scale. The 5th division on the Vernier coincides with a division of the main scale. Find the length.
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Explanation:
The least count is 0.01cm.
Main scale reading = 1.8cm
Vernier scale division = 4(corresponds with main scale division)
Vernier scale reading = Vernier scale division×Least count
= 4×0.01
= 0.04cm
total reading = main scale reading+vernier scale reading
= 1.8+0.04
= 1.84cm
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