Recent content by arslan786786

here is the screen shot sir...!

sir please look at the electric field expression... They are writing E°e^(ikr). The author puts r value... I have searched a lot for it and I found its solution... But i found that they calculate it with a very different method... They calculate 2pifn. x= wt-2pifn.x... You can see in the image...

Though it's e^(e(x-ct))

how we get "e^(ikr)"...? Plz ans me... Thanks