SSS Two Physics Objective Examination Questions

1. A geometric figure defined by three reference frames is known as
A. space
B. plane
C. bearing
D. coordinate
2. When a body assumes constant velocity
A. its acceleration , a=0
B. the total time taken, t=0
C. the total distance covered, s=0
D. none of the above
3. Which of these is not an equation of a uniformly accelerated motion ?
A. s =at + 2ut²
B. v= u + at
C. s= ut + ½ at²
D. v² = u² + 2as
4. Given A(1,2) and B(3,4), the distance AB is
A. 8.22m
B. 2.82m
C. 1.41m
D. 4.11m
5. Which of the following is not a vector quantity?
A. force
B. displacement
C. altitude
D. acceleration
6. Acceleration is defined as
A. distance / time
B. distance × time
C. displacement × time
D. velocity change /time
7. A body moving with an initial velocity U accelerates until it attains a velocity of V within time t. the distance, S covered by the body is given by the expression
A. S = ((v-u)/2)t
B. S = ((v+u)/2)t
C. S = ((v+2u)/2)t
D. S = ((2v-u)/2)t
8. For a projectile, the maximum range is obtained when the angle of projection is
A. 60^o
B. 45^o
C. 75^o
D. 90^o
9. A motor vehicle is brought to rest from a speed of 15m/s in 20s. calculate the retardation
A. 0.75m/s²
B. 1.33m/s²
C. 7.50m/s²
D. 5.00m/s²
10. The measure of equal distance covered in equal time interval is known as
A. uniform velocity
B. uniform speed
C. actual speed
D. average velocity
Use the information below to answer question 11 to 13
If two vector forces F1=10N and F2= 12N act together, find their resultant force if
11. They act in the same direction
A. 10N
B. 12N
C. 22N
D. 2N
12. They act in opposition direction
A. 12N
B. 10N
C. 22N
D. 2N
13. They are inclined at 700 to each other
A. 81.10N
B. 40.20N
C. 18.10N
D. 60.40N
14. A particle starts from rest and moves with a constant acceleration of 0.5m/s2. The distance covered by the particle in 10s is
A. 2.5m
B. 25.0m
C. 5.0m
D. 50.0m
15. When an object moves or accelerate from rest
A. its initial velocity, u =0
B. its final velocity, v=0
C. its acceleration, a=0
D. all of the above
16. Convert 72km/hr to m/min
A. 120m/min
B. 1200m/min
C. 12m/min
D. 12000m/min
17. The S.I unit of the moment of force is
A. Kgm
B. Jm
C. Nm
D. N/m
18. A boy cycles continuously through a distance of 1.0km in 5 minutes. Calculate his average speed
A. 33.30m/s
B. 1.11m/s
C. 11.10m/s
D. 3.33m/s
Use the information below to answer question 19 and 20
A force 150N is inclined at 500 to the horizontal direction. Find its component in the 19. Horizontal direction
A. 69.24N
B. 42.96N
C. 24.69N
D. 96.42N
20. Vertical direction
A. 141.19N
B. 411.91N
C. 111.49N
D. 114.91
21. A train has an initial velocity of 44m/s and an acceleration of -4m/s². Its velocity after 10s is
A. 4m/s
B. 8m/s
C. 2m/s
D. 6m/s
22. Velocity is defined as
A. distance / time
B. displacement / time
C. distance × time
D. velocity change /time
23. The point through which the resultant weight of an object act is known as
A. field
B. equilibrium
C. center of gravity
D. point of stability
24. The following are three types of stability except
A. stable equilibrium
B. unstable equilibrium
C. neutral equilibrium
D. coplanar equilibrium
Use the information below to answer question 25 and 26
If two vector forces F1 = 5N and F2 = 6N are inclined at right angle (I.e θ = 900), calculate
25. The magnitude R
A. 8.71N
B. 1.78N
C. 4.44N
D. 7.82N
26. The direction ∝
A. 93.80⁰
B. 83.90⁰
C. 39.80⁰
D. 98.30⁰
Use the information below to answer question 27 and 30
A stone is projected upwards at an angle of 300 to the horizontal with an initial velocity of 100m/s. calculate
27. The time, t taken to reach maximum height
A. 10s
B. 5s
C. 2.5s
D. 75s
28. The time of flight, T
A. 10s
B. 5s
C. 15s
D. 7.5s
29. The maximum height, H
A. 125m
B. 215m
C. 521m
D. 251m
30. The range, R of projection
A. 686.025m
B. 866.025m
C. 205.866m
D. 50.668m
31. The momentum P of a body is defined as
A. Force x Mass
B. Velocity x Time
C. Impulse x Time
D. Mass x Velocity
32. A net force of magnitude 0.6N acts on a body of mass 40g initially at rest. Calculate the magnitude of the resulting acceleration
A. 15 x 10-²m/s²
B. 15 x 10-¹m/s²
C. 15m/s²
D. 1.5 m/s²
33. The device used for measuring the quantity of heat supplied to a substance is called
A. Heater
B. Calorimeter
C. Beaker
D. Cylinder
34. A ball of mass 0.5kg moving at 10m/s collides with another ball of equal mass at rest. If the two balls move off together after impact, calculate their common velocity
A. 5m/s
B. 2.5 m/s
C. 10m/s
D. 15m/s
35. For a perfectly inelastic collision
A. Only momentum is covered
B. Only kinetic energy is conserved
C. Both momentum and kinetic energy is conserved
D. Both momentum and kinetic energy not conserved
36. A machine is rated as being 60% efficient. This means that it converts
A. 60 joules out of every 100 put in, into useful energy
B. 40 joules out of every 100 put in, into useful energy
C. 60 joules out of every 60 put in, into useful energy
D. 40 joules out of every 60 put in, into useful energy
37. Water without impurities boils at
A. 0^oC
B. 4^oC
C. 104^oC
D. 100^oC
38. The specific heat capacity of a substance is measured in
A. JKgK
B. J/K
C. J/KgK
D. JK
39. A resistance thermometer has a resistance of 10 at 00C and 90 at 1000
C. if it records 55 in a certain medium, calculate the temperature of the medium
A. 18^oC
B. 75^oC
C. 57^oC
D. 38^oC
40. A machine has an efficiency of 80%. If the machine is required to overcome a load of 60N with a force of 40N, calculate its velocity ratio
A. 1.875
B. 8.175
C. 5.817
D. 7.185
41. Water is said to be anomalous
A. At 0^oC
B. Between 0^oC to 40^oC
C. At 4^oC
D. At 100^oC
42. The Fahrenheit scale has an upper fixed point temperature of
A. 273^oF
B. 212^oF
C. 32^oF
D. 373^oF
43. How much heat energy will be needed to change the temperature of 275g of paraffin oil by 75K (SHC of paraffin oil = 2130J/KgK)
A. 13934.52J
B. 25439.31J
C. 93142.35J
D. 43931.25J
44. An object is heated from 30^oC to 57^o
C. What is the increase in its temperature on the Kelvin scale?
A. 27K
B. 87K
C. 300K
D. 273K
45. Which of the following is a second order lever?
A. Plier
B. Wheelbarrow
C. Crawbar
D. Hammer
46. The velocity ration (V.R) for a screw is given by
A. 2πr/P
B. 1/sinθ
C. x/y
D. 2πR/2πr
Use the information below to answer questions 47-49
A truck of mass 3200kg moving with a velocity of 10m/s increases its velocity to 20m/s in 5s. Calculate
47. The change of momentum of the engine
A. 64 x 10³kgm/s
B. 96 x 10³kgm/s
C. 32 x 10³kgm/s
D. 16 x 10³kgm/s
48. The magnitude of the force exerted on the engine
A. 1600N
B. 9600N
C. 6400N
D. 3200N
49. The impulse on the engine
A. 1.6 x 10⁴Ns
B. 9.6 x 10⁴Ns
C. 6.4 x 10⁴Ns
D. 3.2 x 10⁴Ns
50. For a third order lever
A. The load (L) is between the effort (E) and the Fulcrum (F)
B. The Fulcrum (F) is between the load (L) and the effort (E)
C. The Effort (E) is between the Load (L) and the Fulcrum (F)
D. All of the above
51. A boy drags a bag of rice along a smooth horizontal surface (floor) with a force of 2N applied at an angle of 600 to the floor. What is the work done after 3m
A. 6J
B. 3J
C. 2J
D. 5J
52. Which of the following is not a type of machine
A. Rope
B. Wedge
C. Screw
D. Wheel and Axle
53. The thermometric substance for a thermocouple is?
A. Alcohol
B. Gas
C. Resistance wire
D. Current flow
54. Which of the following is not a feature of thermometer
A. Construction
B. Sensitivity
C. Calibration
D. Conduction
55. The S.I unit of temperature is
A. K
B. ^oC
C. ^oF
D. None of the above
56. The difference in temperature between the upper fixed point and the lower point temperatures is called
A. Temperature change
B. Fundamental interval
C. Temperature rise
D. Fundamental change
57. Calculate the quantity of heat required to change 200g of ice to water at ^oC (SHL of fusion of ice = 336J/g)
A. 33300J
B. 27600J
C. 67200J
D. 72600J
58. What is the efficiency of the wheel and axle
A. = (M.A)/(V.R) X 100%
B. = (L X y)/(E X x) X 100%
C. = Wo/Wi X 100%
D. = (L X r)/(E X R) X 100%
59. The quantity of heat required or needed or supplied at ^oC to change the state of a substance is given by
A. Q = mL
B. Q = Pt
C. Q = mCΔθ
D. Q = IVt
60. What is the velocity ratio (V.R) of a plane inclined at 300
A. 1
B. 2
C. 3
D. 4