Third Term Examinations SS 1 Examination Physics

CLASS: S.S.1SUBJECT: Physics

INSTRUCTION: Underline the correct answer

1. What is the uniit  for electrical charges (a) Newton b. Ampeie c. Ammeter d. Watt
2. A 20U charge flows through a conductor in lams. Determine the current flowing in the circuit  (a)  2 x 10^-3A b. 2 x 10^-4A c. 2x 10^-5A d. 2 x 10^-6A
3. _______is the formula for calculating potential difference (a) W = QV b. W = IV c. W = IR d. W = SR
4. Which of these is not a way to measure resistance? (a) Voltmeter Bridge b. Wheat Stone bridge c. Pot entiometer d. Resistive Connection
5. . What is the formula for electrical energy?a. W = QV b. W = UV c. W = VR W = SR
6. What is electrical energy measured in a. Watt b. joules c. ammeter (d) Newton
7. . Calculate the work done when a current is at 5Amps flows through a conductor For loses if the p.d. applied is 5V (a) 250g b. 300g c. 285g d. 325g
8. Which is the formula for surface tension? A. energy/length B. Joul/Length C. Force /Length D. Length/Force
9. Which is not an application of viscosity? A lubricant B.C. D.
10. All affects electrical resistance except ________ a. temperature b. nature of material c. colour d. length
11. Volts is the unit of _________a. Emf b. current c. resistance d. voltmeter
12. Which of these properly represents cells in series?a. C-C-C-C b.1/C 1/C 1/C1/C c. C/1 C/1 C/1 C/1d. C-F-C
13. Which represents cells in parallel? a. C-C-C-C b.1/C 1/C 1/C1/C c. C/1 C/1 C/1 C/1 d. C-F-C-F
14. An atom consists of all these particles except ?a. proton b. neutronc. electrode d. electrode
15. The three states of matter area. solid, liquid, gas b. gas, vapour, ice c. ice, liquid, solidd. solid, gas, vapour
16. A form of accident in electrical current is ____________ a. malaria b. HIV C. shock D. vibration
17. A safety device used in preventing electrical accidents is ______________a. fuse b. iron c. wood d. clothes
18. Fire outbreak is a hazard that electrical current can cause a. True b. False c. Not sure d. None
19. The force per unit length on the surface at right angles is _________a. elasticity b. resistance c. yang modulus d. Capacitance
20. F & E is the mathematical representation of ___________a. tensile b. stress c. strain d. Hooke’s law
21. …………………………………. May be defined as the extent of space or distance extended  (a) Length (b) mass (C) Time (d) Temperature.
22. ……………………………. Are the basic quantities that are independent of others  (a)   Fundamental quantities (b) Derived quantities (C) Mass quantities (d) Meter quantities
23. The unit of mass is ………………………………. (a) m (b) kg (c) S (d) K
24. ……………………………is the instrument used to determine the diameter of a wire (a) Micrometer screw gauge (b) Ruler (c) meter rule (d) burette
25. The dimension of velocity is (a)  L ^– (b) L T ^-1 (c) MLT ^-2 (d) LT
26. All these are types of motion except ………………………………. (a)Random motion (b) Rational motion (c)
27. Time to another without rotating is called ……………………………………. (a) Rational motion (b) Translational motion (c) Random motion (d)Oscillatory motion
28. All these are example of oscillatory motion except (a)  Fan (b)simple pendulum (c) Rocking chair
29. ……………………… is defined as distance travelled in a specified motion(a) Velocity (b) motion (c) displacement (d) speed
30. A car travels at an average speed of 100km/h what distance does it cover in 5minutes. (a) 8.3 km (b) 8.0 km (c) 8.7 km (d)7.3 km
31. …………………………… is tends to oppose the motion of one over the other.  (a)   Force (b) field (c) friction (d) limit
32. Which of the following are fundamental unit except  (a)    kg (b) S (c) m³ (d) NM^-2
33. Which of the unit of the following physical quantify are derived  (a)   Area (b) Thrust o pressure (d) mass
34. The unit of work is ………………………….. (a) Joules (b) Nm^-I (c) meters (d) kg
35. Find the potential energy of a boy of mass 10kg standing on a building floor 10 meters above the ground level (a) 80J (b)1000J (c)100J (d) 50J
36. …………………………. Is defined as the capacity to do work (a) potential (b)Kimetic (c) Work.
37. …………………………………….. is the rate of changing velocity within time (a) mass (b) kilogram (c)acceleration (d)velocity
38. …………………….. are forces which are in contact or in touch with body to which they are applied.  (a)  Force field (b) contact forces (c) electric force (d) magnetic force
39. All these are method of reducing friction except ……………………  (a)  Oil (b) grease (c) ball or roller bearing (d) sand
40. The force applied to a body to keep it moving in a circular part is called ………………… (a) . Centrifugal force (b) centripetal force )c) motion force (d) force

THEORY

Answer five questions out of eight

1. State three importance basic quantities in physics and state the unit
2. Differentiate the different between fundamental quantities and derived quantities
3. State five examples of fundamental quantities and five example of derived quantities.
4. Differentiate between mass and weight
5. Define motion and state the type of motion
6. Define the following ad their unit
   • (a) Velocity
   • (b) Acceleration
   • © Displacement
   • (d)Uniform velocity
7.  Define friction
8.  Differentiate between static friction and dynamic friction.

SECTION C

Answer three (3) questions

1. (i) In a tabular form, state the difference between the Ammeter and Voltmeter
   • (ii) A 60mc charge flows through a conductor if the P.d between its ends is 30 my. Find the work done by the charge
   • (iii) Define potential difference
2. (i) State Chm’s law
   • (ii) State the factors affecting resistance
   • (iii) State three ways resistance
3. (i) Define the term electrical power
   • (ii) How many grades does 3 lamp marked 12v, 24w consume in an hour?
   • (iii) What is the current that flows through it?
4. (i) Define surface tension. Formula for surface tension
   • (ii) Calculate the force required to lift a needle 4 cm long off the surface of water if the surface tension of water is 7-3x 10^-2Nm^-1

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