Saved Bookmarks
| 1. |
A sinusoidal wave produced in a stretched string gets reflected and loses `36%` of its energy in getting reflected from the fixed end of the string. Choose the correct statement from the A. `("Amplitude of reflected wave")/("Amplitude of incident wave")=(8)/(10)`B. Phase difference between incident and reflected wave is `pi`.C. `("Frequency of reflected wave")/("Frequency of incident wave")=(4)/(5)`D. None of the above |
|
Answer» Let the incident wave has intensity `=I` So, intensity of reflected wave `=0.64I` `I prop A_(1)^(2)` And, `0.641 prop A^(2)` So `((A_(1))/(A_(R )))^(2)=((1)/(0.64))` `rArr (A_(2))/(A_(1))=(4)/(5)` |
|