Small pinholes in the leaves of a tree form images of the sun on flat surfaces. On a normal sunny day, what is the shape of the image formed by a leaf?
A
Hollow ring
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B
Crescent
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C
Square
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D
Circular
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Solution
The correct option is D Circular Small pinholes in the tree leaves acts as a pinhole camera and forms an inverted image of the Sun. Since the Sun is spherical, the image formed is circular.