The maximum wavelength observed in the spectral energy distribution of sun is at 4673 Å, at a temperature of about 6000 K. For a star, this maximum is at 9000 Å. Calculate the temperature of the star.

Explanation

To calculate the temperature of the star using Wien's Law, we follow these steps:

### Step-by-Step Solution:

1. **Understand Wien's Law**:
Wien's Law states that the wavelength at which the spectral energy distribution of a black body is maximized (λ_max) is inversely proportional to its absolute temperature (T). Mathematically, it can be expressed as:
\[
\lambda_{\text{max}} \cdot T = b
...