Two Waves Of Same Frequency Have Amplitude In The Ratio 2:1. Find The Ratio Of The Maximum And The Minimum Amplitudes And Intensities In The Region Of Interference. 

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Question

Two waves of same frequency have amplitude in the ratio 2:1. Find the ratio of the maximum and the minimum amplitudes and intensities in the region of interference. 

Solution

Correct option is

3: 1, 9: 1

 

If a1 and a2 be the amplitudes of the waves then, in the interference pattern the maximum and the minimum resultant amplitudes will be (a1 + a2) and (a1 ~ a2) respectively. That is

                         

     

           

SIMILAR QUESTIONS

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(a) The wavelength of a given light is 0.00006 cm. Express this wavelength in micron and in angstrom. 

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Q9

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Q10

 

Two coherent sources X and Y of light of wavelength

λ = 6.2 × 10 –5 cm, produce interference. If both the sources are in the same phase and P is an arbitrary observation point, then calculate XP – YPwhen the point P is (i) At the bright band of 10th order, (ii) At the dark band between third and fourth order maxima.