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प्रश्न
When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is seen at the centre of the shadow of the obstacle. Explain why?
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उत्तर
When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is seen at the centre of the shadow of the obstacle. This is because light waves are diffracted from the edge of the circular obstacle, which interferes constructively at the centre of the shadow. This constructive interference produces a bright spot.
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संबंधित प्रश्न
Two sources are called coherent if they produce waves ______________ .
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Two sources of light are coherent if they have ______.
n identical waves each of intensity I0 interfere with each other. The ratio of maximum intensities if the interference is (i) coherent and (ii) incoherent is ______.
Which sources are called coherent sources?
Which sources are called incoherent sources?
What occurs when two waves meet in opposite phase?
What path difference produces constructive interference?
What is the phase difference for constructive interference?
What path difference produces destructive interference?
What is observed when two incoherent sources superpose?
For incoherent addition of waves, what is the average intensity at any point?
Why do independent light bulbs behave as incoherent sources?
