Assertion (A): When a light wave travels from rarer to denser medium, its speed decreases. Due to this reduction of speed the energy carried by the light wave reduces. |
Reason (R): Energy of wave is proportional to the frequency. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is true
Correct Answer: D
Solution :
Option [d] is correct. |
Explanation: When a light wave travels from rarer to denser medium, its speed decreases. |
But this reduction of speed does not imply the loss of energy carried by the light wave. So the assertion is false. |
Energy of wave is proportional to the frequency of the wave which remains same in very medium. Hence there is no loss of energy. |
So, the reason is true. |
You need to login to perform this action.
You will be redirected in
3 sec