(a) Draw a diagram showing the ‘Young’s arrangement’ for producing ‘a sustained interference pattern’. Hence obtain the expression for the width of the interference fringes obtained in this pattern. (b) If the principal source point S were to be moved a little upwards, towards the slit S1 from its usual symmetrical position, with respect to the two slits S1 and S2, discuss how the interference pattern, obtained on the screen, would get affected.
(a) Draw a diagram showing the ‘Young’s arrangement’ for producing ‘a sustained interference pattern’. Hence obtain the expression for the width of the interference fringes obtained in this pattern. (b) If the principal source point S were to be moved a little upwards, towards the slit S1 from its usual symmetrical position, with respect to the two slits S1 and S2, discuss how the interference pattern, obtained on the screen, would get affected.
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(a) Draw a diagram showing the ‘Young’s arrangement’ for producing ‘a sustained interference pattern’. Hence obtain the expression for the width of the interference fringes obtained in this pattern.
(b) If the principal source point S were to be moved a little upwards, towards the slit S1 from its usual symmetrical position, with respect to the two slits S1 and S2, discuss how the interference pattern, obtained on the screen, would get affected.
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