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Methods of Evaluation

Q.> YDSE is m...

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Q.> YDSE is modified such that the source S is placed asymmetrically and SS_2-SS_{1,=λ/4 (i) state the condition for constructive and destructive interference (iii) obtain an expression for the fringe width. (iii) locate the position of the central fringe.

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Q. The figure drawn here, shows a modified Young's double slit experimental set up in which

s s_{2} - s s_{1} = λ / 4

,
(i) State the condition for constructive and destructive interference.
(ii) Obtain the expression for fringe width.
(iii) Locate position of the central fringe.

Q. Give analytical treatment of YDSE interference bands and hence obtain the expression for fringe width.

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Q. What is interference? Derive the conditions to obtain constructive and destructive interferences.
If a white light source is used in place of monochromatic source of light in young's double slit experiment then what will be the effect on interference fringes.

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B. Write the condition to produce good interference bands.

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