Question

The red light has the longest wavelength in spectrum so according to equation e=hc/lamda but than why it proves ienstine equation e=mc^2 wrong?

Answer 1

Those 2 formulae are used in different situations. They do not prove Einstein wrong.

Explanation:

In `E=(hc)/lambda`, the E is the energy of a photon.

In `E = m*c^2` the E is the energy released when a mass is totally annihilated.

I hope this helps,
Steve