Question

A single-slit diffraction pattern is obtained using a beam of red light. If the red light is replaced by blue light which one of the following observations is true ?

(a) no change in diffraction pattern

(b) diffraction fringes become narrower and crowded together

(c) diffraction fringes become broader and further apart 

(d) diffraction pattern disappears 

Answer 1

Correct option  (b) diffraction fringes become narrower and crowded together 

Explanation:

So diffraction fringes become narrower and crowded together