Question

how can interference occur within diffraction?

Answer 1

$Heya\:mate$

These are related but not exactly the same. ``Interference'' is the more general concept: it refers to the phenemenon of waves interacting. Waves will add constructively or destructively according to their phase difference. ``Diffraction'' usually refers to the spreading wave pattern from a finite-width aperture.

$Hope\:it\:helps!$

Answer 2

Hey mate ^_^

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Answer:
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=> In interference pattern the width of all the interference fringes is equal.

=> In diffraction pattern the width of central maxima is large, and on increasing distance, the width of maxima decreases.

=> In interference pattern the intensity of all the bright bands is equal.

=> In diffraction pattern the intensity of all the secondary maxima is not equal.

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