What must be ratio of the slit width to the wavelength for a single slit, to have the first diffraction minimum at 45˚?

Plane microwaves are incident on a long slit having a width of 5.0 cm. Calculate the wavelength of the microwaves if the first diffraction minimum is formed at theta=30^@ .

In a single slit diffraction pattern

In diffraction due to a single slit, what is the condition for first minimum ?

The distance between the first and fifth minima of a single slit diffraction patterns is 0.40 mm with screen 50 cm away from the slit, using light of wavelength 550 . (a) Find the slit width (b) Calculate the angle of the first diffraction minimum

In single slit diffraction pattern :

Light of wavelength 420 nm is incident on a narrow slit. The angle between the first diffraction minimum on one side of the central maximum and the first minimum on the other side is 2.00^(@) . What is the width of the slit?

Light of wavelength 633 nm is incident on a narrow slit. The angle between the first diffraction minimum on one side of the central maximum and the first minimum on the other side is 1.20 What is the width of the slit?

Plane microwaves are incident on a long slit of width 6 cm. if the first diffraction minimum is formed at 30^(@) then the wavelength of microwaves is

In a diffraction pattern due to a single slit of width a, the firt minimum is observed at an angle 30^(@) when light of wavelength 5000 Å is incident on the slit. The first secondary miximum is observed at an angle of