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A bulb is kept burning just right above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow.$(You\ may\ try\ to\ experiment\ first\ and\ then\ answer\ these\ questions).$
"
Given: A bulb is kept burning just right above some solids.
To do: To find the shapes of shadows formed in each case.
Solution:
We know that:
- A spherical solid casts a shadow of a circular shape.
- A cylindrical solid casts a shadow of a linear or rectangular shape.
- A cuboidal solid casts a shadow of a rectangular shape.
$(i)$ For a ball, the shadow will be a circle.
$(ii)$ For a cylindrical pipe, the shadow is a rectangle.
$(iii)$ For a book, the shadow is a rectangle.
Updated on: 10-Oct-2022
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