We do jerk a clinical thermometer before we measure body temperature because

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The kink in the capillary near the bulb of the clinical thermometer prevents mercury level from falling on its own.

The kink in the capillary near the bulb of the clinical thermometer do not prevent mercury level from falling on its own.

Both A & B

We should bring the mercury level to the minimum

answer is D.

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Detailed Solution

Kink is present in clinical thermometer, to break the mercury as it contracts, storing the highest temperature reading

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