The source of electromagnetic radiation which is used in the instrument atomic absorptions spectrophotometer is _____?

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The source of electromagnetic radiation which is used in the instrument atomic absorptions spectrophotometer is _____? Answer: Hallow cathode lamp

A hollow cathode lamp (HCL) is used as the radiation source because it emits light at wavelengths characteristic of the element being analyzed, ensuring high specificity and sensitivity.

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.