2022 · Specimen · 9702/02 | Q1

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Question (1 of 7)4 marks · Practise this topic →

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Available practice: 53 of 60 marks. Parts 2(b)(iv), 4(b)(iii), 6(b)(v) await marking support. Scores cover available parts only.

The speed v of a transverse wave on a uniform string is given by the expression

v = √(Tl/m)

where T is the tension in the string, l is its length and m is its mass.

An experiment is performed to determine the speed v of the wave. The measurements are shown in Table 1.1.

(a)Use the data in Table 1.1 to calculate the speed v.

Answer guidance

Using You must use the thing it names. An answer that reaches the right value another way may not score.

[2 marks]

The speed v of a transverse wave on a uniform string is given by v = √(Tl/m), where T is the tension, l the length and m the mass.

(b)Use your answer in (a) (the calculated speed v) and the data in Table 1.1 to calculate the absolute uncertainty in the value of v.

Answer guidance

Using You must use the thing it names. An answer that reaches the right value another way may not score.

[2 marks]

9702/02/SP/22Cambridge International AS & A Level Physics 9702 · Specimen 2022 · Paper 2 · Question 1