Bolometer is used to detect ______________

Infrared rays

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Ultraviolet rays

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X rays

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$γ$ rays

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Solution

The correct option is A
Infrared rays

Bolometer
A bolometer is used to detect Infrared rays.
A bolometer is a device used for detecting and measuring the heat and radiation of microwave energy.
It uses the temperature-sensitive resistive element whose resistance changes with temperature.
Hence, the correct option is $(A)$ .

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