A radiation $A$ is focused by a proper device on the bulb of a thermometer. Mercury in the thermometer shows a rapid increase. The radiation $A$ is:

infrared radiation

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visible light

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ultraviolet radiation

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X

-rays

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Solution

The correct option is A infrared radiation
If radiation A is focused by a proper device on the bulb of a thermometer then thermometers measure the heat cause in rapid increase,and the radiation A is infrared radiation.because we know Infrared radiation is as heat.

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A radiation A is focused by a proper device on the bulb of a thermometer. Mercury in the thermometer shows a rapid increase. The radiation A is:

The correct option is A infrared radiationIf radiation A is focused by a proper device on the bulb of a thermometer then thermometers measure the heat cause in rapid increase,and the radiation A is infrared radiation.because we know Infrared radiation is as heat.

A radiation $A$ is focused by a proper device on the bulb of a thermometer. Mercury in the thermometer shows a rapid increase. The radiation $A$ is:

The correct option is A infrared radiation
If radiation A is focused by a proper device on the bulb of a thermometer then thermometers measure the heat cause in rapid increase,and the radiation A is infrared radiation.because we know Infrared radiation is as heat.