Ordinary level 2026 South West regional mock physics 1

Section 1 (Forty-two questions)

Direction: Each question or incomplete statement is followed by four suggested answers. Select the best answer for each question.

1. Which of the following quantities is a vector?

   • A. Volume

   • B. Magnetic field strength

   • C. Distance

   • D. Mass

2. The forces acting on a piece of wood floating on water are:

   • A. Upthrust and viscous drag.

   • B. Weight and viscous drag.

   • C. Normal reaction force and weight

   • D. Upthrust and weight.

3. If mass and velocity of a body are constant, momentum of the body will

   • A. increase

   • B. initially be constant and increase with time

   • C. be constant.

   • D. decrease with time

4. Figure 1 shows three forces: 3 N, 4 N and 8 N acting on a body A.

   (Figure 1 description: Two forces of 3 N and 4 N act to the left. One force of 8 N acts to the right.)

   The resultant of the three forces is

   • A. 1 N to the right

   • B. 7 N to the right

   • C. 1 N to the left

   • D. 7 N to the left

5. The horizontally component of the resultant force in Figure 2 is:

   (Figure 2 description: A force of 30 N acting at an angle of 45° to the horizontal.)

   • A. 20.0 N

   • B. 25.4 N

   • C. 21.2 N

   • D. 18.6 N

6. An object accelerates from rest for 5 s and attains a velocity of 15 m s⁻¹. The total distance covered during this time is:

   • A. 35.5 m.

   • B. 37.5 m.

   • C. 40 m.

   • D. 31.8 m.

7. Mercury is preferably used in the construction of thermometers because:

   • A. It is the only liquid that is a metal

   • B. It is the densest liquid

   • C. It has high conductivity and does not vaporize easily

   • D. It is poisonous and easily affordable

8. Which of the following units is for work done?

   • A. newton per metre

   • B. kilogram-metre

   • C. joules per metre

   • D. newton-metre

9. An object of mass 2 kg falls from a height of 5 m from the earth’s surface. The potential and kinetic energies of the object 2.5 m before it hits the ground are respectively

   • A. 25 J and 75 J

   • B. 100 J and 50 J

   • C. 50 J and 50 J

   • D. 50 J and 100 J

10. When a 25 kg bag of rice is taken from the earth (where the acceleration due to gravity is 10 m/s²) to the moon (where the acceleration due to gravity is 1.6 m/s²), its mass would be:

    • A. 25 kg

    • B. 24 kg

    • C. 150 kg

    • D. 15 kg

11. Which of the following pairs of physical quantities have the same unit?

    • A. Mass and weight

    • B. Force and Power

    • C. Work and Energy

    • D. Work and power

12. The formation of the spectrum of white light as it passes through different media is caused by:

    • A. Reflection

    • B. Refraction

    • C. Total internal reflection

    • D. Interference

13. A diode is used to:

    • A. Reduce current.

    • B. Reduce voltage.

    • C. Change a.c. to d.c.

    • D. Change d.c to a.c.