Question

If the light source is slit-shaped, then what type of waveform is formed?​

Answer 1

Answer:

Interference is the phenomenon in which two waves superpose to form the resultant wave of the lower, higher or same amplitude. ... This is because light waves are randomly generated every which way by most sources. This means that light waves coming out of a source do not have a constant amplitude, frequency or phase.

Answer 2

Types of waveforms

Explanation:

• The light bends into a semicircular wave and passes through the gap. When the waves are crest to crest or trough to trough, pure constructive interference occurs. Where they are crest to trough, there is pure destructive interference. In order for us to see the pattern, light must fall on the screen and spread through our eyes.
• Water waves have an analogous pattern. It is worth noting that the constructive interference zone and the destructive interference zone extend outward from the groove at a well-defined angle to the original light.  The wavelength and the spacing between the slits influence these angles.
• The presence of overlapping waves is firmly indicated by interference effects. Thomas Young proposed that light is a wave that obeys the superposition principle, and his greatest experimental breakthrough was demonstrating light's constructive and destructive interference.  
• A laser illuminates two parallel slits in an otherwise opaque surface in a modern version of Young's experiment, which differs only in the source of light. On a faraway screen, the light travelling through the two openings may be seen.
• The rules of geometrical optics apply when the widths of the slits are much higher than the wavelength of the light—the light casts two shadows, and there are two illuminated patches on the screen.  The light diffracts into the geometrical shadow as the slits narrow in width, and the light waves overlap on the screen.
• The intensity pattern on the lit screen is determined by the superposition principle. When the difference in pathways from the two slits to a location on the screen equals an integral number of wavelengths, constructive interference occurs.