Question

The figure shows air-filled bulbs connected by a U-tube, partly filled with alcohol. What happens to the levels of alcohol in the limbs X and Y when an electric bulb is placed midway between the painted air-filledbulbs and electric bulb is lighted? Justify.

Answer 1

Answer:

hello it's your answer

Explanation:

We know that absorptivity of black colour is more than that of white.

Hence, when the bulb is switched on, black bulb will absorb more heat and hence the air above alcohol in tube X will expand more than the air above alcohol in tube Y as a result of which alcohol in limb X will fall and rise in limb Y.

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Answer 2

Answer:

The level of alcohol in limb X falls while that in limb Y rises.

Explanation:

The level of alcohol in limb X falls while that in limb Y rises.