AP EAMCET202018 Sep 2020Morning ShiftPhysicsWaves and SoundActual
Two waves of frequency (f ) and amplitude (a ) superimpose with each other. The total intensity is directly proportional to
Options
- A(a )
- B(2 a )
- C(2 a^2 )
- D(4 a^2 )
Correct answer
D. (4 a^2 )
Step-by-step solution
When two waves of same frequency (f ) and having same amplitude (a ) superimpose, then resultant amplitude, (A=a+a=2 a ) Total intensity (I ) of resultant wave is directly proportional to square of amplitude. ( i.e., I A^2 I (2 a)^2 I 4 a^2 )