Question

A thermostat is?

A

A device used to maintain a constant temperature of a water bath or an oven

B

A modern type of thermoflask which work on the principle of equipartition of heat energy

C

An instrument by which the accuracy of thermometers is determined

D

A device which varies the temperature of a both

Medium

Solution

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Correct option is A)

A thermostat is a device that automatically regulates temperature, or that activates a device when the temperature reaches a certain point.
Thus, it can be used to maintain a constant temperature of a water bath or an oven.
Hence, option A is correct.

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