Learn Extracted exam questions A-Level Physics 9702 Physics November 2025 Question Paper 36
9702 Physics November 2025 Question Paper 36
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In this experiment, you will investigate the phase difference between the oscillations of two mass–spring systems.
Assemble the apparatus as shown in Fig. 1.1.
Fig. 1.1
\begin{itemize} \item Mass A and mass B are each $200\text{ g}$. \item Add a mass $z$ of $40\text{ g}$ to mass B. \end{itemize}
Record the value of $z$.
$z = \hrulefill \text{ g}$
\begin{itemize} \item $M$ is given by $M = 200\text{ g} + z$. \end{itemize}
Calculate $M$.
$M = \hrulefill \text{ g}$
Change $z$ and determine $P$. Repeat until you have six sets of values of $z$ and $P$.
Record your results in a table. Include values of $M$, $\frac{1}{\sqrt{M}}$ and $\frac{1}{P}$ in your table.
Plot a graph of $\frac{1}{P}$ on the $y$-axis against $\frac{1}{\sqrt{M}}$ on the $x$-axis.
Draw the straight line of best fit.
Determine the gradient and $y$-intercept of this line.
gradient = \hrulefill
$y$-intercept = \hrulefill
It is suggested that the quantities $P$ and $M$ are related by the equation
Use your answers in \textbf{(c)(iii)} to determine the values of $a$ and $b$. Give appropriate units.
$a =$ \hrulefill $b =$ \hrulefill
In this experiment, you will investigate the tension in a string.
Set up the apparatus as shown in Fig. 2.1.
\begin{itemize} \item The mass hanger and masses should have a total mass $M$ of $0.400\text{ kg}$. \item The distance between the two lower nails is $d$, as shown in Fig. 2.1. \end{itemize}
Measure and record $d$.
$d =$ \hrulefill $\text{ cm}$
The tension in the string is $T$.
Calculate $T$ using $T = Mg$, where $g = 9.81 \text{ N}\,\text{kg}^{-1}$.
$T = \hrulefill$ N
Hook the newton meter on the string half-way between the two lower nails and pull it horizontally with a force $F$ of $5.0 \text{ N}$, as shown in Fig. 2.2.
The force $F$ causes the string to deflect a distance $x$, as shown in Fig. 2.2.
Measure and record $x$.
$x = \hrulefill$ cm
Estimate the percentage uncertainty in your value of $x$. Show your working.
percentage uncertainty = \hrulefill %
Calculate $y$, where
y = \hrulefill \text{ cm}
\begin{itemize} \item Add slotted masses to the mass hanger so that the total mass $M$ is $0.700\text{ kg}$. \item Repeat (b), (c)(i) and (c)(iii). \end{itemize}
T = \hrulefill \text{ N} x = \hrulefill \text{ cm} y = \hrulefill \text{ cm}
It is suggested that the relationship between $y$, $T$ and $x$ is
where $k$ is a constant.
Using your data, calculate \textbf{two} values of $k$.
first value of $k =$ \hrulefill second value of $k =$ \hrulefill
Justify the number of significant figures that you have given for your values of $k$.
It is suggested that the percentage uncertainty in the values of $k$ is 20%.
Using this uncertainty, explain whether your results support the relationship in (e).
Describe 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.
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- \hrulefill
- \hrulefill
- \hrulefill
Describe four improvements that could be made to this experiment. You may suggest the use of other apparatus or different procedures.
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- \hrulefill
- \hrulefill
- \hrulefill