Question

All solids above 1000 K begin to emit radiation in what range on the electromagnetic scale?

radio
infrared
visible Light
ultraviolet

Answer 1

The correct answer is visible light.

Step-by-step explanation:

Answer 2

Infrared

Step-by-step explanation:

Wien's displacement law states that the peak wavelength of the radiation emitted by an object is given by

`\lambda=(b)/(T)`

where

`b=2.898\cdot 10^(-3) m\cdot K` is the Wien's displacement constant

T is the absolute temperature of the object

In this problem,

T = 1000 K

So the peak wavelength of the radiation emitted by the body is

`\lambda=(2.898\cdot 10^(-3) m\cdot K)/(1000 K)=2.90\cdot 10^(-6) m = 2.90 \mu m`

And this corresponds to infrared radiation, whose range of wavelength is 700 nm - 1 mm.