1.

The max. No. Of possible interference maxima for slit separation equal to twice the wavelength of YDSE is :

Answer»

`INFTY`
5
3
zero

Solution :d sin `THETA = n lambda`
`d = 2 lambda`
`thereforesin theta = n/2`
value of sin `theta` VARIES between - 1 and + 1.So equation (i) is true if `n = -1, -2, 0, +1, +2.`
`therfore` n has five integer values.


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