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UPSC 2006: Which one of the following is printed on a commonly used fluorescent tube light?
(a)220 K
(b)273 K
(c)6500 K
(d)9000 K
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Not attemptedCorrect Answer: (c) 6500 K
Fluorescent tube lights normally carry the marking “6500 K”, indicating their correlated colour temperature that mimics daylight (CIE standard illuminant D65). The other temperature values are not standard ratings printed on tubes. ([edurev.in](https://edurev.in/t/203022/Physics-Solved-Questions--1995-2020--1?utm_source=openai))
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What is the correct answer to this UPSC 2006 Science & Technology question?▼
The correct answer is option (c): 6500 K. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Physics question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2006, GS Paper 1, as Question 148. It falls under Science & Technology > Physics.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Physics?▼
UPSC has asked 104 questions from Physics (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.