The shape of the interference fringes in Young’s double slit experiment when D (distance between slit and screen) is very large as compared to fringe width is nearly (a) straight line (b) parabolic. (c) circular (d) hyperbolic
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The shape of the ‘interference fringes’ in ‘Young’s double slit experiment’ when ‘D’ very large as compared to ‘fringe width’ is nearly hyperbolic.
Option: (d)
Explanation:
- Let us consider a ‘Young’s double slit experiment’, in which the distance B is the fringe width and D is the distance between the slit and the screen. ‘d’ is the distance between the two slots.
- The formula is B = AD/d where A is the wavelength of light. Here D is much more as compared to B then d = AD. Now we plot the values of n as 1, 2 ... n the Grinch width increases in a hyperbolic fashion.
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Answer:
a) straight line
Explanation:
the angles between the fringes make parallel lines which are straight lines
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