A crystal was examined with X - rays of wave length `1.53A^(@)` with a maximum reflection at `15^(@) 36`. What is the interplanar spacing ? If X - rays of wave length `2.29A^(@)` was used, what will be angle of reflection?

Explanation

To solve the problem step by step, we will follow the instructions provided in the video transcript while ensuring clarity in each step.

### Step 1: Understanding the Given Data
We are given:
- Wavelength of X-rays, \( \lambda = 1.53 \, \text{Å} \)
- Angle of reflection, \( \theta = 15^\circ 36' \)

### Step 2: Convert Angle to Decimal
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