Superposition, Coherence & Intensity
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:
Show answer and solution
Answer: (c)
- A: energy taken from dark regions appears in bright regions, so total energy is conserved. True.
- B: interference and diffraction are shown by all waves (sound, water waves, matter waves), not only light. False.
- So the answer is (c).