While measuring the thermal conductivity of liquids, the upper part is kept hot and lower one cool so that :

convectional flow is stopped

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radiation is stopped

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conduction is easier

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it is easier to perform the experiment

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Solution

The correct option is A convectional flow is stopped
Heat flows from hotter part to colder part and the above arrangement is done to avoid convection currents.

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While measuring the thermal conductivity of liquids, the upper part is kept hot and lower one cool so that :

The correct option is A convectional flow is stoppedHeat flows from hotter part to colder part and the above arrangement is done to avoid convection currents.

The correct option is A convectional flow is stopped
Heat flows from hotter part to colder part and the above arrangement is done to avoid convection currents.