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A-LevelPhysicsWaves9702/12 · Oct/Nov 2020 · Q221 Mark

The speed v of waves in deep water is given by the equation v² = gλ / (2π) where λ is the wavelength of the waves and g is the acceleration of free fall. A student measures the wavelength λ and the frequency f of a number of these waves. Which graph should he plot to give a straight line through the origin?

Af² against λ

Bf against λ²

Cf against 1/λ

Df² against 1/λ

✓ Correct answer

D: f² against 1/λ

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About this question

Topic: Waves, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2020 Paper 1 Variant 2, question 22.

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