Advanced level 2026 North West regional mock physics 1

Here is the extracted text from the physics exam paper.

---

SECTION I (Forty-Two Questions)

Directions: Each of the questions or incomplete statements in this section is followed by four suggested answers. Select the best answer for each question.

1. Which of the following pairs of physical quantities consists of both scalar quantities?

• A. moment and force

• B. energy and power

• C. Force and distance

• D. Velocity and momentum

2. Which of the following is a unit of pressure?

• A. $Kgm^2s^{-1}$

• B. $kgms^{-2}$

• C. $kgm^{-1}s^{-2}$

• D. $kgm^{-1}s$

3. An atom is electrically neutral because it has

• A. more neutrons than electrons

• B. more protons than neutrons

• C. same number of protons as neutrons

• D. same number of protons as electrons

4. When you look at the speedometer of a moving car, the quantity you read is

• A. acceleration

• B. instantaneous speed

• C. average speed

• D. average distance

5. Figure 1 shows a uniform beam placed on a pivot. The clockwise moment of the beam in Nm is:

(Diagram details: Pivot at center. Left side: $6N$ at $0.2m$. Right side: $4N$ at $0.4m$)

• A. $0.8$

• B. $2.4$

• C. $1.2$

• D. $1.6$

6. Silicon (Si) is an example of

• A. a semiconductor

• B. a conductor

• C. an alloy

• D. an insulator

7. Which of the following actions will help increase the sensitivity of a moving coil galvanometer?

• A. Making the pointer shorter

• B. making the pointer fatter

• C. Increasing the diameter of pointer

• D. increasing the length of the pointer

8. A certain radioactive isotope has a half-life of 24 minutes. How long will it take for its activity to drop to 1/8 of its initial value?

• A. 12 minutes

• B. 24 minutes

• C. 72 minutes

• D. 96 minutes

9. A circuit component which is used to change an alternating current into a direct current is a

• A. Transistor

• B. Transformer

• C. Diode

• D. Fuse

10. The change of state directly from gas to solid without passing through a liquid is called

• A. deposition

• B. condensation

• C. solidification

• D. sublimation

11. A machine raises a load of 5000 N to a height of 6.0 m in 5 s. The power developed by the machine is

• A. 150000 W

• B. 166.7 W

• C. 6000 W

• D. 4166.7 W

12. Which of the following instruments is used to measure pressure?

• A. sonometer

• B. thermometer

• C. micrometer

• D. manometer

13. The rate of doing work is also called

• A. efficiency

• B. power

• C. energy

• D. conversion

14. The process of adding small amounts of impurities to an intrinsic semiconductor to increase its conductivity is called:

• A. ionization

• B. lagging

• C. insulation

• D. doping

15. Water is suitable for use as a cooling liquid because it

• A. expands abnormally

• B. has a high specific heat capacity

• C. freezes at 0°C

• D. has a high density

16. A ray of light is incident at an angle of 30° from air into a transparent material. If the angle of refraction is found to be 19°, then the refractive index of this material is

• A. 1.5

• B. 1.6

• C. 0.2

• D. 0.7

17. The inner surface of a vacuum flask is always made shiny. This helps to reduce heat loses by

• A. conduction

• B. evaporation

• C. convection

• D. radiation

---

Would you like me to provide the correct answers or explain the calculations for questions 5, 8, 11, or 16?