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The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.Ans the following:(b) Will a piece of iron float or sink in mercury ? - Physics

Answer in Brief

The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Ans the following:
(b) Will a piece of iron float or sink in mercury?

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Solution

Density of water 1.0 g Cm-3

Density of piece of iron = 7.8 × 10-3
Density of mercury is 13.6 × 10-3 g Cm-3
Since 7.8 × 10-3 < 13.6 × 10-3
∴ Density of piece of iron is LESS than density of mercury
∴ Piece of iron will FLOAT in mercury

Concept: Concept of Flotation and Sinking of a Substance (Relate to Density)
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APPEARS IN

Selina Concise Physics Class 8 ICSE
Chapter 2 Physical Quantities and Measurement
Short/Long Answer Questions | Q 18.2 | Page 35
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