Question

List in order of increasing wavelength:

visible light, microwaves, infrared radiation, ultraviolet radiation, radio waves.

• Indicate which type in the list causes sunburn, and which type carries most of the energy Earth gets from the Sun.

• For visible light, tell how—if we can—we notice different frequencies.

Answer 1

Q1(a)

Ans- in increasing order of wavelength -

                         ultraviolet radiation , visible light, infrared radiation ,microwaves ,Radio waves.

         sunburn = ultraviolet radiation

          most of the energy Earth gets from the Sun is from = visible light

(b)

Ans- We can notice different frequencies in visible light , by using a prism . Prism split different frequencies of light in white light,