Loading...
UPSC 2008: How can the height of a person who is six feet tall be expressed (approximately) in nanometres?
(a)183 × 10⁶ nanometres
(b)234 × 10⁶ nanometres
(c)183 × 10⁷ nanometres
(d)234 × 10⁷ nanometres
Attempt This Question
Not attemptedCorrect Answer: (c) 183 × 10⁷ nanometres
1 foot = 0.3048 m. Thus 6 ft = 6 × 0.3048 m ≈ 1.83 m. Converting metres to nanometres (1 m = 10⁹ nm) gives 1.83 × 10⁹ nm = 183 × 10⁷ nm, which matches option (c). ([nist.gov](https://www.nist.gov/pml/us-surveyfoot/revised-unit-conversion-factors?utm_source=openai))
Related UPSC Questions
More from Physics
2008easy
Which one of the following laser types is used in a laser printer?
2008easy
Assertion (A): In the visible spectrum of light, red light is more energetic than green light. Reason (R): The wavelength of red light is more than th
2009easy
Which one of the following types of waves are used in a night vision apparatus ?
Related Science & Technology Topics
Frequently Asked Questions
What is the correct answer to this UPSC 2008 Science & Technology question?▼
The correct answer is option (c): 183 × 10⁷ nanometres. 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 2008, GS Paper 1, as Question 126. 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.