Question

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Distinguish between diffraction and interference Discuss
the diffraction of light due to single thin slit.
ns. Diffraction: When light waves pass over an obstacle they bend
partially at the edges of the obstacle. Thus sperading of light
waves that pass through a obstacle is called diffraction
Interference: Non-uniform distribution of resultant intensity in
the form of alternate bright and dark fringes when two waves of
same frequency having a constant phase difference superimpose
on each other is known as interference,
Diffraction of light due to single slit-
Diverging light from monochromatic sources is made parallel after
refraction through convex lens L. Me refraction light from L, is
propagated in the form of plane wavwfront WW (fig.3). The
plane wavefront WW" is incident on the slit AB of width
According to Iluggen's principle, each point of slit AB acts​

Answer 1

Answer:

Answer. Snell's Law states that the ratio of the angle of incidence to the angle of refraction of a wave as it travels through a boundary between two media is a constant termed the refractive index. The value of this constant is equal to the ratio of speeds before and after it crosses the boundary