Question: Single-slit diffraction can be observed with any type of electromagnetic wave (not just light). Suppose you want to make a diffraction slit whose width is

Single-slit diffraction can be observed with any type of electromagnetic wave (not just light). Suppose you want to make a diffraction slit whose width is five times larger than the wavelength for the following cases. How wide would the slit be? 

(a) A radio wave for your favorite FM station (f = 100 MHz)

(b) The waves that carry your cell phone signals (f 2.0 GHz) 

(c) Red light (f = 5.0 x 1014 Hz) 

(d) The X-rays used in your dentist’s office (f = 4 x 1020 Hz)

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