Due to which property of light sharp shadows of opaque objects are obtained?
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Heya.
Whenever light(and waves in general) reach an obstacle, they bounce off.
Shadows appear simply because, the light that was falling on that area or spot is being shielded.
We see shadows because, there is more light in the surroundings that than there is light at the shadow area.
That's why you cannot see a shadow in a dark room.
The way shadows are formed in such a way that the shape of the shadows resembles the object is because light travels in straight lines.
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Due to which property of light sharp shadows of
opaque objects are obtained?
=> Since, light travels in straight line, any
obstacle obstructing the path will cast its
shadow.
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