A physics professor wants to perform a lecture demonstration of Young's double-slit experiment for her class using the 633-nm light from a He-Ne laser. Because the lecture hall is very large, the interference pattern will be projected on a wall that is 5.0 m from the slits. For easy viewing by all students in the class, the professor wants the distance between the m=0 and m=1 maxima to be 35 cm. What slit separation is required in order to produce the desired interference pattern?

The distance of separation is

Explanation:

From the question we are told that

    The wavelength is

     The  distance of the screen is

     The  distance between the fringes is  

Generally the distance between the fringes is mathematically represented as

Here d is the distance of separation between the slit

=>    

=>    

=>  

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