A plumbline (Sahul) is the combination of:-

0

a cone and a cylinder

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a hemisphere and a cone

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frustum of a cone and a cylinder

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sphere and cylinder

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Solution

The correct option is B
a hemisphere and a cone

The upper part of the plumbline is in the shape of a hemisphere
The bottom part of the plumbline is in the shape of a cone
Therefore, it is a combination of hemisphere and cone.
The figure given below shows the hemispherical and conical shape plumbline
Hence, Option B is a correct answer

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