If the density of wood is `1500 kg m ^-3` , then its relative density is

Options

A. 1500
B. 1.5
C. 15
D. 150

Answer

To find the relative density of wood given its density, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Relative Density**:
Relative density (also known as specific gravity) is defined as the ratio of the density of a substance to the density of a reference substance, typically water for solids and liquids.

2. **Identify the Density of Water**:
The density of water at 4 degrees Celsius is approximately \(1000 \, \text{kg/m}^3\).

3. **Use the Given Density of Wood**:
The density of wood is given as \(1500 \, \text{kg/m}^3\).

4. **Apply the Formula for Relative Density**:
The formula for relative density is:
\[ \text{Relative Density} = \frac{\text{Density of the substance}}{\text{Density of water}} \]
Substituting the values we have:
\[ \text{Relative Density} = \frac{1500 \, \text{kg/m}^3}{1000 \, \text{kg/m}^3} \]

5. **Calculate the Relative Density**:
Performing the division:
\[ \text{Relative Density} = 1.5 \]

6. **State the Final Answer**:
Therefore, the relative density of wood is \(1.5\).