When X- ray of wavelength 0.5 Å pass through 7 mm thick aluminium sheet then their intensity reduces to one fourth. Find coefficient of absorbtion of aluminium for these X-rays.

Explanation

To solve the problem of finding the coefficient of absorption of aluminum for X-rays with a wavelength of 0.5 Å passing through a 7 mm thick aluminum sheet, we will follow these steps:

### Step 1: Understand the given data
- Wavelength of X-ray (λ) = 0.5 Å = \(0.5 \times 10^{-10}\) m
- Thickness of aluminum sheet (x) = 7 mm = \(7 \times 10^{-3}\) m
- Initial intensity (I₀) and final intensity (I) after passing through the aluminum sheet: I = \(\frac{I₀}{4}\)

### Step 2: Write the formula for the coefficient of absorption (μ)
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