When an electromagnetic wave travels from a medium to the

Question

When an electromagnetic wave travels from a medium to the other,its wavelength changes but its frequency remains constant. So the energy also changes.

If we consider a particular photon,its frequency does not change so its energy should not change as energy = h

.

Also the wavelength of the photons change in the above conditions,so its energy should change as Energy = hc/

.

So what is the reason of this contradiction and what actualy happens?

shubham sharda · Accepted Answer

When light travels to different medium its speed and wavelength changes but its energy and wavelength remains the same. E=hv, thus enegy remains constant. For E=hc/lambda, the c and wavelength changes in such proportion so that energy remains constant. Hope it helps.

Modern Physics> When an electromagnetic wave travels from...

Deepak Patra , 12 Years ago

shubham sharda

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