1.

A radiation P is focused by a proper device on the bulb of a thermometer. Mercury in the thermometer shows a rapid increase. The radiation P is : (a) infrared radiation (b) visible light (c) ultraviolet radiation (d) X -rays.

Answer»

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

(a) infrared radiation

(b) visible light

(c) ultraviolet radiation

(d) X -rays.



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