What does the wave length of an EM wave tell about its energy?

Answer 1

Longer wavelength less energy and shorter wavelength equals more energy. This is because velocity (speed)=frequency x wavelength. And te velocity of all EM waves is the speed of light.

we know the expression-

frequency=speed of light(c)/wavelength

Energy is given by- E=h*frequency=h*c/wavelength {h=Planck's constant}

so,energy is directly proportional to frequency and inversly proportional to wavelength...that is energy increases with increase in frequency and decreases with increase in wavelength.

example:-red color has more wavelength and hence has less energy.

Answer 2

The wavelength of an electromagnetic (EM) wave is inversely proportional to its energy. This means that as the wavelength decreases, the energy of the wave increases. Shorter wavelengths correspond to higher energy levels, such as gamma rays, while longer wavelengths have lower energy levels, such as radio waves.

Answer 3

As the wavelength decreases, the energy increases.