If the phase difference between the two light waves arriving at a point is (2n-1) `pi` radians. The condition for the minimumintensity of light at tha

Question

If the phase difference between the two light waves arriving at a point is (2n-1) `pi` radians. The condition for the minimumintensity of light at tha

If the phase difference between the two light waves arriving at a point is (2n-1) `pi` radians. The condition for the minimumintensity of light at that point will be
A. `I_("min") =(a_(1)-a_(2))^(2)`
B. `I_("min") =a_(1)-a_(2)`
C. `I_("min") =(a_(1)+a_(2))^(2)`
D. `I_("min") =a_(1)^(2)-a_(2)^(2)`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`I= R^(2)`
`=a_(1)^(2)+a_(2)^(2)+2a_(1)a_(2) cos (alpha_(1)-alpha_(2))`
`:. I_("min") =a_(1)^(2)a_(2)^(2)=-2a_(1)+a_(2)`
`=(a_(1)-a_(2))^(2)`

4 views Answered 2023-02-05 15:29