wave-optics Question 6
Question: Q. 2. When light travels from a rarer to a denser medium, it loses speed. Does this loss imply a reduction in energy carried by the light waves?
A [CBSE 2010]
Show Answer
Solution:
Ans. No, this loss does not imply a reduction in energy carried by the light waves. Energy of any wave depends upon its frequency which remain same whenever light wave travels from one medium to another medium.
AII Q. 3. Define type of light wave according to Huygens’ principle. Which optical phenomenon proves this wrong?
R [CBSE 2010]
Ans. According to Huygens’ principle, light is a longitudinal wave. Polarisation proves that light is not a longitudinal wave, it is a transverse wave.
