1.

Path difference between two waves superposing at one point is 132, so interference at that point will be ...... and ...... order.

Answer»

constructive `13^(th)`
DESTRUCTIVE `13^(th)`
constructive `7^(th)`
destructive `7^(th)`

Solution :`("path difference.)/("wavelength")=(13 LAMBDA)/(lambda)`= Bright FRINGES of the `13^(th)` orderis obtained.
`:.` So at this POINT constructive interference of `13^(th)` order will be formed.


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