Two coherent sources of equal intensity produce maximum intensity of `100` units at a point. If the intensity of one of the sources is reduced by 36% reducing its width, then the intensity of light at the same point will beA. (a) 90B. (b) 89C. (c) 67D. (d) 81

Two coherent sources of equal intensity produce maximum intensity of `

1.	Two coherent sources of equal intensity produce maximum intensity of `100` units at a point. If the intensity of one of the sources is reduced by 36% reducing its width, then the intensity of light at the same point will beA. (a) 90B. (b) 89C. (c) 67D. (d) 81
Answer» Correct Answer - D Intensity of each source `=I_0=(100)/(4)=25unit` If the intensity of one of the source is reduced by 36% then `I_1=25unit` and `I_2=25-25xx(36)/(100)=16(unit)` Hence resultant inensity at the same point will be `I=I_1+I_2+2sqrt(I_1I_2)=25+16+2sqrt(25xx16)=81unit`

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Two coherent sources of equal intensity produce maximum intensity of `100` units at a point. If the intensity of one of the sources is reduced by 36% reducing its width, then the intensity of light at the same point will beA. (a) 90B. (b) 89C. (c) 67D. (d) 81

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