Question

There is a kink near the mercury-bulb in a capillary tube of clinical thermometer. Explain giving scientific reasons:​

Answer 1

Answer: The kink prevents the mercury present in the capilalry to fall back into the bulb . So it seperates the high temperature mercury and cool mercury and allows the user to take a reading when the thermometer is taken out .

Answer 2

Answer:

The kink prevents the mercury present in the capillary to fall back into the bulb . So it separates the high temperature mercury and cool mercury and allows the user to take a reading when the thermometer is taken out.

Explanation:

A kink in the glass tube which breaks the mercury as it contracts, storing the highest temperature reading. The glass tube is shaped like a lens to magnify the thin mercury thread. Shaking the thermometer resets the mercury back.