Learn Extracted exam questions A-Level Physics 9702 Physics November 2025 Question Paper 33

9702 Physics November 2025 Question Paper 33

Source PDF on the left, extracted YAML on the right. Compare numbering, marks, options and text.

1 short_answer p. 2

In this experiment, you will investigate the oscillations of a pendulum on a board.

1a 1 mark calculation p. 2 1.1

Fix the string of the pendulum onto the nail using some of the adhesive putty, as shown in Fig. 1.1.

Fig. 1.1

The distance between the two edges of the board is $S$, as shown in Fig. 1.1.

The length $L$ of the pendulum is the distance between the centre of the nail and the centre of the bob.

Adjust the length of the pendulum by wrapping the string around the nail so that the centre of the bob is approximately $1.5\text{ cm}$ from the edge of the board.

Measure and record $S$ and $L$.

$S = \hrulefill \text{ cm}$ $L = \hrulefill \text{ cm}$

1b 2 marks calculation p. 3 17.1

\begin{itemize} \item Set up the apparatus as shown in Fig. 1.2. \item The distance between the lower edge of the top of the board and the bench is $h$, as shown in Fig. 1.2.

Adjust the position of the boss so that $h$ is approximately $22\text{ cm}$. \item Fix the position of the bottom of the board using adhesive putty. \item Measure and record $h$. \end{itemize}

$h = \hrulefill \text{ cm}$

\begin{itemize} \item Move the bob to the edge of the board, as shown in Fig. 1.3. \item Release the bob. The bob rolls across the board and the pendulum oscillates. \item Take measurements to determine the period $T$ of the oscillations. \end{itemize}

$T = \hrulefill \text{ s}$

1c 8 marks calculation p. 4 17.1

Change $h$ in the range $10.0 \text{ cm} \leqslant h \leqslant 38.0 \text{ cm}$ and determine $T$. Repeat until you have six sets of values of $h$ and $T$.

Record your results in a table. Include values of $\frac{S}{h}$ and $T^2$ in your table.

1d short_answer p. 4

(no root text)

1di 3 marks short_answer p. 4 17.1

Plot a graph of $T^2$ on the $y$-axis against $\frac{S}{h}$ on the $x$-axis.

1dii 1 mark short_answer p. 4

Draw the straight line of best fit.

1diii 2 marks calculation p. 4 17.1

Determine the gradient and $y$-intercept of this line.

gradient = \hrulefill

y-intercept = \hrulefill

1e short_answer p. 6

(no root text)

1ei 2 marks calculation p. 6 17.1

It is suggested that the quantities $T$, $S$ and $h$ are related by the equation

$$T^2 = A \frac{S}{h} + B$$

where $A$ and $B$ are constants.

Using your answers in \textbf{(d)(iii)}, determine the values of $A$ and $B$. Give appropriate units.

$A =$ \hrulefill

$B =$ \hrulefill

1eii 1 mark calculation p. 6 2.1

Theory suggests that

$$A = \frac{28\pi^2 L}{5g}$$

where $g$ is the acceleration of free fall.

Use your values in \textbf{(a)} and \textbf{(e)(i)} to determine a value for $g$. Give an appropriate unit.

$g =$ \hrulefill

2 short_answer p. 8

In this experiment, you will investigate the resistance of a light-dependent resistor (LDR) using the light from a light-emitting diode (LED).

2a short_answer p. 8

(no root text)

2ai 2 marks calculation p. 8 9.3

Using the LED, set up the circuit shown in Fig. 2.1.

Ensure that the positive terminal of the power supply and the positive terminal of the LED are connected as shown in Fig. 2.1.

P and Q are crocodile clips. Position P and Q so that there is approximately $10\text{ cm}$ of wire W between P and Q.

Close the switch. The LED should light.

Open the switch.

Using the LDR and ohmmeter, set up a second circuit as shown in Fig. 2.2.

2aii 1 mark calculation p. 9 1.3

Estimate the percentage uncertainty in your value of $d$. Show your working.

percentage uncertainty = \hrulefill %

2b 2 marks calculation p. 10 9.3

The length of wire W between P and Q is $L$.

Measure and record $L$.

$L =$ \hrulefill

Close the switch.

The potential difference $V$ across the LED is given by the voltmeter.

The resistance $R$ of the LDR is given by the ohmmeter.

Measure and record $V$ and $R$.

$V =$ \hrulefill

$R =$ \hrulefill

Open the switch.

2c 3 marks calculation p. 10 9.3

Change the length of wire W between P and Q so that $L$ is approximately $90\text{ cm}$.

Repeat (b).

$L =$ \hrulefill

$V =$ \hrulefill

$R =$ \hrulefill

2d short_answer p. 10

It is suggested that the relationship between $V$, $d$ and $R$ is

$$V = \frac{Zd}{R} + k$$

where $Z$ has the value $1.00 \times 10^3\text{ V}\,\Omega\,\text{m}^{-1}$ and $k$ is a constant.

2di 1 mark calculation p. 10 10.3

Using your data, calculate \textbf{two} values of $k$.

first value of $k =$ \hrulefill

second value of $k =$ \hrulefill

2dii 1 mark short_answer p. 11 1.3

Justify the number of significant figures that you have given for your values of $k$.

2e 1 mark long_answer p. 11 1.3

It is suggested that the percentage uncertainty in the values of $k$ is 5%.

Using this uncertainty, explain whether your results support the relationship in \textbf{(d)}.

2f 1 mark calculation p. 11 22.1

It is suggested that

$$k = \frac{hc}{e\lambda}$$

where $h$ is $6.63 \times 10^{-34} \text{ Js}$, $c$ is $3.00 \times 10^8 \text{ ms}^{-1}$, $e$ is $1.60 \times 10^{-19} \text{ C}$ and $\lambda$ is the wavelength of the light emitted by the LED.

Use your second value of $k$ to determine $\lambda$.

$\lambda =$ \hrulefill $\text{ m}$

2g short_answer p. 12

(no root text)

2gi 4 marks long_answer p. 12 1.3

Describe \textbf{four} sources of uncertainty or limitations of the procedure for this experiment.

For any uncertainties in measurement that you describe, you should state the quantity being measured and a reason for the uncertainty.

\hrulefill
\hrulefill
\hrulefill
\hrulefill

2gii 4 marks long_answer p. 12 10.3

Describe \textbf{four} improvements that could be made to this experiment. You may suggest the use of other apparatus or different procedures.

\hrulefill
\hrulefill
\hrulefill
\hrulefill

9702 Physics November 2025 Question Paper 33

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