A-LevelPhysicsPhysical quantities and units9702/12 · Oct/Nov 2020 · Q21 Mark

The speed v of waves on a stretched wire is given by the equation v = T^p μ^q where T is the tension in the wire and μ is the mass per unit length of the wire. What are the values of p and q?

Ap = 1/2, q = -1/2

Bp = 1/2, q = 1/2

Cp = -1/2, q = -1/2

Dp = -1/2, q = 1/2

✓ Correct answer

C: p = -1/2, q = -1/2

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

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