2 List the following types of radiationXray microwaves infra

2. List the following types of radiation-X-ray, microwaves, infrared radiation, radio waves and ultraviolet radiation-in order of: a. increasing energy b. increasing frequency c. increasing wavelength 3. In the visible spectrum, indicate the colors with a. the longest wavelength b. the highest frequency c. the greatest energy

Solution

Solution

(2)

(a) Increasing order of energy

Radio waves < Microwaves < infrared radiation < ultraviolet radiation < X-rays

This is because energy is directly proportional to the frequency (E = hv) where v is frequency.

(b) Increasing order of frequency

Radio waves < Microwaves < infrared radiation < ultraviolet radiation < X-rays

This is because frequency is inversely proportional to the wavelength (v = c/) where is wavelength

(c) Increasing order of wavelength

X-rays < ultraviolet radiation < infrared radiation < Microwaves < Radio waves

This is because frequency is inversely proportional to the wavelength (v = c/) where is wavelength

(3)

In the visible spectrum,

(a) Red color shows the longest wavelength (620-750 nm)

(b) Violet color shows highest frequency (668-789 THz).

(c) Violet color shows the greatest energy (2.75-3.26 eV)