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Physics (AS & A Level) · Oct / Nov 2018 · Paper 13 · Question 1

9702Physical quantities

Which statement is not a reasonable estimate?

  1. AAtmospheric pressure at sea level is about 1 × 10^5 Pa.
  2. BLight takes 5 × 10^2 s to reach us from the Sun.
  3. CThe frequency of ultraviolet light is 3 × 10^12 Hz.
  4. DThe lifespan of a man is about 2 × 10^9 s.

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Correct answer: C. The frequency of ultraviolet light is 3 × 10^12 Hz.

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