In interference and diffraction, the light energy is redistributed. If it reduces in one region, producing a dark fringe, it increases in another region, producing a bright fringe.
A. As there is no gain or loss of energy, these phenomena are consistent with the principle of conservation of energy.
B. Diffraction and interference are characteristics exhibited only by light waves.
Choose the correct answer from the options given below :
- A
A is false, but B is true
- B
A is true, but B is false
- C
A is true and B is also true
- D
Both A and B are false
Statement A is true: interference and diffraction merely redistribute light energy, conserving the total — no energy is created or lost.
Statement B is false: diffraction and interference are general wave phenomena and are exhibited by all kinds of waves (sound, water, matter waves), not only light.
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