1. According to Newton’s law of cooling, the heat energy lost per unit area of a body depends on the

I. Surface area

II. Nature of the surface

III. Temperature of the surface

IV. Excess temperature over the surroundings WAEC 2018 Q12

2. A body of mass m moving around a circle of radius r with a uniform speed v experiences a centripetal force F. The work done by the centripetal force on it is — WAEC 2018 Q7

3. Which of the following factors does not increase the rate of evaporation of water in a lake? WAEC 2018 Q16

4. Which of the following statements about magnetic lines of force is not correct? They — WAEC 2018 Q42

5. When a cylinder rolls down an inclined plane, it has one or more of the following types of motion:

I. Oscillatory

II. Random

III. Rotational

IV. Translational

6. To obtain a virtual, erect and magnified image from a thin converging lens, an object must be placed  — WAEC 2018 Q29

7. Which of the following electromagnetic waves is most energetic? WAEC 2018 Q20

8. The property of a body to remain at rest or to continue in uniform motion in a straight line is called — WAEC 2018 Q4

9. Which of the units of the following physical quantities are derived? I. Area II. Thrust III. Pressure IV Mass

1988, Q1

10. Which of the following about friction is/are correct? I. Friction depends on the nature of the surfaces in contact. II. Friction depends on the area in contact. III. Friction always acts in the direction of motion.