Assertion :A screw gauge of pitch $1$ mm advances $\frac{3}{4}$ mm for three fourth rotation of the head. Reason: Pitch is the distance moved by the screw for one complete rotation of head.

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
A screw gauge of pitch $1$ mm advances $\frac{3}{4}$ mm for three fourth rotation of the head. Pitch of the screw is the distance moved by the screw for one complete rotation of head.

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