Name a prism required for obtaining a spectrum of ultraviolet light.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding the Requirement**: The question asks for a specific type of prism that can be used to obtain a spectrum of ultraviolet light.

2. **Identifying Suitable Materials**: Not all prisms can effectively disperse ultraviolet light. We need to identify materials that are transparent to ultraviolet radiation.

3. **Researching Prisms**: Among the various types of prisms, we find that certain materials like glass are not suitable for ultraviolet light because they absorb UV radiation.

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