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Grade: 12th pass

                        

Ratio of intensities of two waves is 25:4. Then the ratio of maximum and minimum intensity will be?

2 years ago

Answers : (2)

Susmita
425 Points
							Say a
						
2 years ago
Susmita
425 Points
							
Say amplitude of 1st wave and 2nd wave is a1 and a2 and their intensity is I1 and I2.
Intensity is proportional to square of amplitude.
So,
a12/a22=I1/I2=25/4
or,a1/a2=5/2
Resultant maximum intensity
Imax=(a1+a2)2
Resultant minimum intensity
Imin=(a1~a2)2
So 
Imax/Imin=(5+2)2/(5-2)2=49/9
please approve the answer if you are helped.
2 years ago
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