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प्रश्न
In a single slit diffraction experiment, when tiny circular obstacle is placed in path of light from a distance source, a bright spot is seen at the centre of the shadow of the obstacle. Explain why?
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उत्तर
A bright spot is observed when a tiny circular object is placed in path of light from a distant source in a single slit diffraction experiment because light rays flare into the shadow region of the circular object as they pass the edge of the tiny circular object. The lights from all the edges of the tiny circular object are in phase with each other. Thus, they form a bright spot at the centre of the shadow of the the tiny circular object.
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संबंधित प्रश्न
State two points of difference between the interference patterns obtained in Young’s double slit experiment and the diffraction pattern due to a single slit.
Will the diffraction effects from a slit be more or less clearly visible if the slit-width is increased?
What separates the bright regions in a single-slit diffraction pattern?
How does the intensity of secondary maxima change as you move away from the centre?
What are the path differences between wavelets arriving at C when \[\theta=0\]?
Which equation equates the top-to-middle path difference to the value required for destructive interference?
What condition for a dark fringe follows from \[\frac{a}{2}\sin\theta=\frac{\lambda}{2}\]?
Into how many equal parts can the slit be divided to generalise the condition for minima?
Why is \[n=0\] excluded from the condition for minima?
How does the intensity change on both sides of \[\theta=0\]?
