Answer:
The maximum number of bright spot is
Step-by-step explanation:
From the question we are told that
The slit distance is

The wavelength is

Generally the condition for interference is

Where n is the number of fringe(bright spots) for the number of bright spots to be maximum

=>

So

substituting values


given there are two sides when it comes to the double slit apparatus which implies that the fringe would appear on two sides so the maximum number of bright spots is mathematically evaluated as

The 1 here represented the central bright spot
So
