A-LevelPhysicsPhysical quantities and units9702/12 · May/June 2012 · Q21 Mark

For which quantity is the magnitude a reasonable estimate?

Afrequency of a radio wave 500 pHz

Bmass of an atom 500 μg

Cthe Young modulus of a metal 500 kPa

Dwavelength of green light 500 nm

✓ Correct answer

D: wavelength of green light 500 nm

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2012 Paper 1 Variant 2, question 2.

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