Question

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this is experimental questions so kindly reply in proper manner
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Answer 1

Answer:

Fix the black paper on the glass plate by using adhesive.Place two razor blades so that their sharp edges are parallel and extremely close to each other to form a narrow slit in between.

Cut the small slit in between the sharp edges of blades and place at a suitable distance from a wall or screen of a dark room.Throw a beam of light on the slit by the laser pencil.A diffraction pattern of alternate bright and dark bands is seen on the wall.

Conclusion

When light waves are incident on a slit or aperture then it bends away (spread) at the comers of slit showing the phenomena of diffraction of light.

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