Question

How many of the following is/are incorrect?
i. The importance of the equation E = mc2 is that energy has mass.
ii. Electromagnetic radiation can be thought of as a stream of particles called photons.
iii. Electromagnetic radiation exhibits wave properties.
iv. Energy can only occur in discrete units called quanta.

Answer 1

Answer:

None of the following is correct

Explanation:

• Einstein's relation of energy mass equivalence, $E = mc^{2}$ shows that mass and energy are interchangeable thus holds the importance of both.
• Electromagnetic radiations are considered to be originating from EM field and hence contains light of different wavelengths in its spectrum such as X-rays, $\gamma$- rays, radio waves, etc.
• Electro-magnetic radiations follows the principle of duality and hence exhibit both wave and particle nature as in sound and light.
• Energy can be both in continuous as well as in discrete form.