Question

What is the role of kink in a clinical thermometer?​

Answer 1

Answer:

it stops the mercury from coming back

Answer 2

$\sf \huge \underline{answer} \implies$

Kink in the Mercury thermometer helps to prevents the falling of mercury present in capillary tube into bulb. It ensures that the user takes the correct reading of temperature. That's the reason a person before taking a new reading must give a sudden shake to the clinical thermometer so that the mercury level comes to normal.