Question

Compare blue and red light from the visible spectrum. 

• Which has the longer wavelength? 

• Which has the greater frequency? 

• Which has the greater energy?

Res Compare photons of X-ray and microwave radiation. 

• Which has the longer wavelength? 

• Which has the greater frequency? 

• Which has the greater energy?

Answer 1

1) Red light has longer wavelength than blue light. Red light has long waves about 700nm while Blue light has wavelength about 470nm.

Blue light has greater frequency than red light. Blue has a frequency interval from 610 - 670 THz. Red light frequency interval from 430 - 480 THz.

wavelength of light is decreases, the frequency of light increases and Waves with a short wavelength have the most energy. So blue light short wavelength than red light so blue light has greater energy than red light. Blue light energy is 2.64–2.75 eV and red light energy is 1.65-2.00 eV.

2) Microwave radiation has the longer wavelength than photons of x-ray. Microwave has wavelength ranging from 1 meter to 1 millimeter. X-ray has wave length ranging from 0.01 to 10 nanometers.

X- ray has greater frequency than the microwave because x-ray has shorter wave length. Frequency of x-ray ranging from 3×10¹⁶ Hz to 3×10¹⁹ Hz. Microwave radiation has frequency ranging from 300 MHz (1 m) to 300 GHz (1 mm).

X-ray has greater energy than microwaves because of its short wave length. Energy of x-ray ranging from 100 eV to 100 keV. Microwave energy ranging from 1.24 meV – 1.24 µeV.