In a Vernier calipers | Measurement & Error | JEE MAIN_2026

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JEE MAIN_2026

05-04-26_S1

Question

In a Vernier calipers, when both jaws touch each other, zero of the Vernier scale is shifted to the right of zero of the main scale and $7^{\text {th }}$ Vernier division coincides with a main scale reading. If the value of 1 main scale division is 1 mm and there are 10 Vernier scale divisions, then the Vernier caliper has

Select the correct option:

A

0.07 cm negative zero error

B

0.7 cm negative zero error

C

0.07 cm positive zero error

D

0.7 cm positive zero error

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Scale reading $=$ main scale + (Least count × V.S.R). $$ \begin{aligned} & =0+\frac{1}{10} \times 7=0.7 \mathrm{~mm} \\ & =0.07 \mathrm{~cm} \end{aligned} $$

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