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CBSE - VII - Science - Heat

how does a knink in a thermometer help.

Asked by soumyabrata chatterjee 4th May 2016, 9:16 PM
Answered by Expert

Answer:

The kink helps in taking correct readings because the easily passes up through this kink when the temperature rises but it does not lower down when the temperature falls. It needs a jerk to fall back in the bulb. 
Answered by Expert 5th May 2016, 10:15 AM

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