Width of Principal (Central) Maxima

⁣Angular width of central maximum is between θ = λ/a and θ = - λ/a . Hence width of central maximum = 2λ/a. angular width of secondary maximum is between θ = λ/a and θ = 2λ/a . Hence width of secondary maximum = λ/a. width of central maximum is inversly proportional to slit width a.





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