Advanced level 2026 Adamawa regional mock physics 1

Section 1

1. Which physical quantity has the SI unit $\text{kgm}^2\text{s}^{-3}\text{A}^{-1}$?

[A]. Power

[B]. Electric charge

[C]. Electric potential difference

[D]. Resistance

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2. A student uses a digital balance with a sensitivity of $0.01 \text{ g}$ to measure a sample. The balance consistently shows: $5.24 \text{ g}$, $5.23 \text{ g}$, $5.24 \text{ g}$, while the true mass is $5.40 \text{ g}$. Which statement BEST describes the measurements?

[A]. The balance is accurate but not sensitive

[B]. The balance is sensitive but not accurate

[C]. The balance is both accurate and sensitive

[D]. The balance is neither accurate nor sensitive

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3. A force of $10\text{N}$ acts upward on a body falling freely and another force of $10\text{N}$ acts downwards on the object. what can be said about the net force?

[A]. net force is $20\text{N}$ downward

[B]. net force is $0\text{N}$

[C]. net force is $20\text{N}$ upward

[D]. net force is a Scalar

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4. Which of the following pairs give the S.I base units of angular momentum and torque?

[A]. $\text{kgm}^2\text{s}$ and $\text{kgms}^{-2}$

[B]. $\text{kgms}^{-1}$ and $\text{kgm}^2\text{s}$

[C]. $\text{kgms}^{-1}$ and $\text{kgms}^{-2}$

[D]. $\text{kgm}^2\text{s}^{-1}$ and $\text{kgm}^2\text{s}^{-2}$

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5. In Figure 1, a uniform lever has a total length of $3.2 \text{ m}$. The lever is pivoted at a point $1.0 \text{ m}$ from its left end. A mass M is placed at the far left end. The lever is inclined at an angle $\theta = 37^\circ$ to the horizontal. A vertical downward force of $1000\text{N}$ is applied to the far right end of the lever to maintain it in static equilibrium.

(Image description: A lever pivoted $1.0 \text{ m}$ from the left. Mass M is at the left tip. A $1000\text{N}$ force acts vertically at the right tip. The lever makes an angle $\theta$ with the dashed horizontal line.)

Assuming the lever is in rotational equilibrium, the moment due to the applied force is?

[A]. $1757 \text{ Nm}$

[B]. $1324 \text{ Nm}$

[C]. $2200 \text{ Nm}$

[D]. $2556 \text{ Nm}$

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6. When measuring the diameter of a wire using a micrometre screw gauge, what is the main source of error?

[A]. Parallax error in reading the scale

[B]. Zero error of the micrometre screw gauge

[C]. Wire not being perfectly circular

[D]. All of the above

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7. A $5 \text{ kg}$ block initially at rest experiences two forces simultaneously for $4 \text{ seconds}$ as shown in the figure 1.1.

(Image description: A $5 \text{ kg}$ block. A vertical upward force $F_2 = 15 \text{ N}$ and a horizontal force $F_1 = 20 \text{ N}$ are acting on it.)

The magnitude of the final momentum of the block is?

[A]. $100 \text{ kgms}^{-1}$

[B]. $150 \text{ kgms}^{-1}$

[C]. $125 \text{ kgms}^{-1}$

[D]. $25 \text{ kgms}^{-1}$

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8. When measuring an AC P.d using a CRO, what does adjusting the vertical gain control do?

[A]. Changes the time-base

[B]. Changes the voltage scale

[C]. Changes the trigger level

[D]. Changes the frequency display

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9. Two particles of equal masses are revolving in circular paths of equal radii with speed $v_1$ and $v_2$ respectively. The ratio of their centripetal forces is?

[A]. $\frac{v_2}{v_1}$

[B]. $(\frac{v_2}{v_1})^2$

[C]. $\sqrt{\frac{v_2}{v_1}}$

[D]. $(v_1v_2)^2$