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Q. Distinguish between interference and diffraction fringes?
Interference
Diffraction
1) It is because of the superposition of secondary wavelets from two different wave fronts produced by two coherent sources.
1) It is because of the superposition of secondary wavelets emitted from various points of the a. same wave front.
2) Fringes are evenly spaced.
2) Fringes are unevenly spaced.
3) Bright fringes are of similar intensity
3) Intensity falls rapidly
4) Comparing among diffraction it has large number of fringes
4) It has less number of fringes.
Harmful effects of Noise: 1. Noise causes nervous tension, aggression and commotion in normal human beings. 2. Continuous noise damage hearing power and complete deafness.
If a force applied on a body causes a alteration in the normal positions of the molecules of the body, resulting in a alteration in the configuration of the object either in length
A PROJECT REPORT ON A MODEL
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which radio isotpo used in skin diease treatment
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