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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.$(You\ may\ try\ to\ experiment\ first\ and\ then\ answer\ these\ questions).$

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**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.

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