A measuring jar of an internal diameter 10 cm is partially filled with water. Four equal spherical balls of diameter 2 cm each are dropped in it and they sink down in water completely. What will be the change in the level of water in the jar?

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None of these

answer is B.

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Detailed Solution

Concept: A sphere is a circular, three-dimensional object. Three axes—the x-axis, y-axis, and z-axis—dividualize the sphere. The main difference between a circle and a sphere is this. In contrast to other 3D forms, a sphere lacks vertices and edges. By using the jar's height as the water's rise height, one may calculate the volume of each sphere and multiply the result by the jar's volume. to ascertain the jar's water content.

As we know that the formula of the volume of a cylinder is

and the volume of sphere is

Using the formula

Hence, the correct answer is option (2).

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