This document contains 2022

AQA A LEVEL PHYSICS PAPER 2 2022 BUNDLE

Question Paper + Marking Scheme 2022

Section A box

Answer all questions in this section.

0 1 Figure 1 shows apparatus used to measure the speed of sound in a steel rod.

Figure 1

The steel rod is suspended from a beam using rubber bands.

When the hammer is in contact with the end L of the steel rod, a circuit is completed

and the signal generator is connected to the oscilloscope.

Figure 2 shows the waveform then displayed on the oscilloscope.

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outside the

Figure 2 box

0 1 . 1 Which control on the oscilloscope should be used to centre the trace vertically on the

screen?

Tick () one box.

[1 mark]

X-shift

Y-gain

Y-shift

Question 1 continues on the next page

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When the hammer box hits end L, a sound wave travels along the steel rod and is

reflected at end R.

When the wave returns to L the rod bounces away from the hammer and the circuit is

broken.

Figure 3 shows the waveform produced by the brief contact between the hammer

and L.

Note that the waveform has now been centred vertically.