The volume of a stone having an irregular shape can be determined using?

Analysis

The question asks for the appropriate instrument used to measure the volume of an object with an irregular shape. Unlike regular shapes (like cubes or spheres) where you can measure dimensions and use a formula, irregular objects do not have specific dimensions to measure with a ruler or gauge.

Concept: Displacement Method

To find the volume of an irregular solid, we use the Archimedes' Principle or the displacement method.

1. You fill a container (like a measuring cylinder) with a known volume of liquid (usually water).
2. You submerge the irregular object completely into the liquid.
3. The object displaces a volume of water equal to its own volume.
4. The new reading on the scale minus the initial reading gives you the volume of the stone.

Step-by-Step Solution

1. Analyze the options: • A. Meter rule: Used for measuring length, width, or height of regular objects. • B. Measuring cylinder: A graduated glass or plastic container used to measure the volume of liquids and, by displacement, the volume of irregular solids. • C. Vernier calliper: Used for measuring small lengths, internal/external diameters, and depths of objects with high precision. • D. Micrometer screw gauge: Used for measuring very small lengths or thicknesses with extremely high precision.

2. Evaluate: Since the stone is irregular, you cannot measure its "length" or "diameter" to calculate volume. You must use the displacement of a liquid. The measuring cylinder is specifically designed for this purpose.

Conclusion

The measuring cylinder is the correct tool because it allows you to observe the rise in water level caused by the submerged stone, which directly corresponds to the stone's volume.

Exam Tip

Whenever you see a question about measuring the volume of an irregular object, always look for keywords like "displacement," "measuring cylinder," or "eureka can." These are the standard tools for this task in Physics practicals.