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A fluorescent tube contains a gas - AQA - A-Level Physics - Question 15 - 2022 - Paper 1
Question 15
A fluorescent tube contains a gas. The coating of the tube. A becomes ionised by the gas and emits photons of ultraviolet light. B absorbs photons of ultraviolet ... show full transcript
Worked Solution & Example Answer:A fluorescent tube contains a gas - AQA - A-Level Physics - Question 15 - 2022 - Paper 1
Step 1
C absorbs photons of ultraviolet light from the gas and emits photoelectrons.
Answer
The correct answer is C, which discusses the photoelectric effect. In a fluorescent tube, a gas is ionized and emits ultraviolet light. The coating absorbs these ultraviolet photons, leading to the emission of photoelectrons, which is a fundamental principle of how fluorescent lighting operates.