Assertion :The least count of vernier callipers is dependent on its design. Reason: The L.C of V.C $= \frac{P i t c h}{N o . o f V . S . D}$

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The least count of any Vernier calipers is dependent upon the way its made. Hence, the assertion is correct. The least count is given as the ratio of the pitch and the no of divisions which are made during construction. The reason is therefore the correct explanation for the assertion. The correct answer will therefore be option (A).

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