23/04/2020 Senior Class WAEC/NECO/UTME Mock Exams(Physics) 0Comments by Gate Academy Please, fill out the information below to continue. NAME EMAIL PHONE NUMBER 1. Which among the following are primary colors?Blue, Yellow, GreenRed, Magenta, YellowRed, Green, BlueYellow, Violet, Blue2. Which of the followings are the correct SI units of the quantities indicated?I. N (Force)II. N/m (Torque)III. Watt (Power)IV. Kgm/s² (Momentum)I, III & IV OnlyI & II OnlyI & III OnlyI, II & III Only3. I. diameter of a small ball bearing.II. thickness of a piece of paper.III. diameter of a measuring cylinder.IV. length of a piece of wire.Which of the above can be measured using a micrometer screw gauge?III and IV onlyII and III onlyI and II onlyall of the aboveI, II, and IV only4. With an increase in pressure the melting point of water willfirst increase and then decreaseincreasedecrease remain unaffected5. Which of the following is a vector quantity?current densitycurrentaltitudemasstime6. Which of the following instruments has a reading accuracy of 0.5mm?micrometer screw gaugemeter rulespring balancevernier callipersprotractor7. Light from the laser is ________.IncoherentCompositeDispersed light Monochromatic 8. The power source of a ticker-timer vibrates 40 times in one second. If the ticker-timer made 200 dots during an experiment, determine how long the experiment lasted5s15s25s10s45s9. The period of revolution round the sun is maximum by which among the following planets?MarsEarthMercury Venus10. The heating element of an electric heater is made of ____None of theseCopperNichromeAluminum11. Electrons were discovered byJ. J. ThompsonJames Chadwick B.Sir Isaac NewtonCharles Newton12. Galvanometer can be converted into a voltmeter by usinga low resistance wire in parallela high resistance wire in seriesa low resistance wire in seriesa high resistance wire in parallel13. Persistence of vision is the principle behind?CinemaSpectroscopePeriscopeCamera14. The resultant force of a couple ishalfzerooneinfinity15. In order to remove the error of parallax when taking measurements with a meter rule, the eye should be focusedVertically upwards on the markingsSlantingly towards the right on the markingsSlantingly towards the left on the markingsVertically downwards on the markings16. An example of a scalar quantity ismomentumvelocityacceleration due to gravityweightelectric charge17. The general gas law can be written asV/T = constantP/T = constantPV/T = constantPV = constant18. Body floats in a fluid when it ________displaces its own volume of the liquid (fluid)displaces its own weight of the fluidis no longer subjected to gravitydisplaces its own density of the fluid19. Which metal is commonly used for making an electromagnet?Copper Nickel Cobalt Iron20. Radio waves belong to the class of waves whose velocity is about3 × 10^-8 m/s3 × 10^6 m/s34 m/s3 × 10^8 m/s21. Which of the following quantities has the same unit as the Watt?force x accelerationforce x velocityforce x distanceforce x time22. The distance X, metres travelled by a particle in time, t seconds is described by the equation X = 10 + 12t².Find the average speed of the particle between the time interval, t = 2s and t = 5s.52.57m/s108m/s60m/s84m/s72m/s23. Which of the following represents the correct precision if the length of a piece of wire is measured with a meter rule?35.01mm35mm35.00mm35.0mm24. The Gas law was given byBoyleOstwaldFaradayArrhenius25. Which of the following is not a luminous object?The sunThe moonA starA lit candle26. The international agreed system of units (S.I) for physical measurements are?kg, m, scm, g, slb, ft, skg, cm, sg, m, s27. One of the following readings represents the measurement of the length of a metal rod using vernier callipers.5cm5.165cm5.0cm5.160cm5.16cm28. In order to remove the error of parallax when taking measurements with a meter rule, the eye should be focusedslantingly towards the right on the markingsvertically downwards on the markingsvertically upwards on the markingsslantingly towards the left on the markings29. Fire in the diesel engine is produced by which of the following?Spark plugSelf starterCompressionFriction 30. Which of the following pairs of physical quantities comprises vectors?electric field potential & electric field intensityfriction & momentumforce ratio & velocity ratioenergy & powercapacitance & inductance31. Kilowatt – hour is a unit ofcurrentenergypowerelectric charge32. The magnitude of the resultant of mutually perpendicular forces, F1 and F2 is 13N. If the magnitude of F1 is 5N, what is the magnitude of F2?18N2.6N12N8N65N33. A machine gun with a mass of 5kg fires a 50g bullet at a speed of 100m/s. The recoil speed of the machine gun is34. In which of the following devices is the expansion of a solid a disadvantage?I. Simple pendulum II. Fire alarms III. Thermostat IV. Bimetallic thermometerII, III, and IV onlyI onlyIII onlyII and III only35. An Eagle flying due north with a velocity of 15m/s sheds a feather in an air current blowing at 20m/s due east. The feather will move with a velocity of25m/s west of north20m/s west of south25m/s east of north25m/s east of south15m/s north36. The lower fixed point corresponds to a length of 20mm on the stem of a thermometer while the upper fixed point corresponds to 160mm. The temperature corresponding to a length of 48mm is50.0°C41.7°C20.0°C30.0°C37. The dimensions of surface tension areM/L/TM/T²MT²M/L/T²38. A man walks 8km north and then 5km in a direction 60° east of north. Find the distance from his starting point.3.00km13.00km14.36km11.36km39. What is the relationship between mechanical advantage (MA), velocity ratio (VR) and efficiency in percentage?E = MA/VR × 100%VR = 1/(sinθ×MA)MA = 1/E × 100%MA = E × VR40. At what temperature are the temperatures on the Celsius and Fahrenheit scales equal? 40° Celsius- 40° Celsius- 273° Celsius273° Celsius41. If a ball is moving at 18m/s in a direction inclined at 60° to the horizontal. The horizontal component of its velocity is9√3m/s18m/s9m/s6√3m/s6m/s42. Which of the following is a set of vectors?mass, volume and densityacceleration, velocity and momentforce, mass and momentmass, weight and density43. A single force which produces the same effect as a set of forces acting together at a point is known as theequilibriumcomponentresistantequilibrantresultant44. A ball is thrown vertically upwards from the ground with an initial velocity of 20m/s. The maximum height reached by the ball is10.0m22.5m7.5m20.0m45. A charge 50μC has an electric field strength of 360N/C at a certain point. The electric field strength due to another charge 120μC kept at the same distance apart and in the same medium is944N/C864N/C150N/C18N/C46. A platinum resistance thermometer has resistances of 5.25Ω and 9.75Ω at 0°C and 100°C respectively. When the resistance is 8.25Ω, the temperature is75.0°C66.7°C84.6°C63.6°C47. An aircraft attempts to fly due north at 100km/h. If the wind blows against it from east to west at 60km/h, its resultant velocity is54km/h N60°E117km/h N31°W40km/h N31°E117km/h N65°W160km/h N30°W48. Ampere-hour is the unit of which among the following?Intensity of currentPower EnergyAmount of charge49. Which of the following is equivalent to Kgm/s?NmsN/sNsJ/s50. If the volume of a gas is recorded as 76 cm³ at a temperature of 27°C with a pressure of 800 mmHg. What will be the volume of the gas at S.T.P.?25.7 cm³36.2 cm³24.3 cm³72.8 cm³51. A tugboat is travelling from Lagos to Morocco across the river Nile with a resultant velocity of 20 knots. If the river flows at 12 knots, the direction of motion of the boat relative to the direction of water flow is36.87°90°136.87°53.13°0°52. Which of the following is a fundamental unit?JoulesAmpereNewtonWatts53. A machine has a V.R of 4. If it requires 800N to overcome a load of 1600N, what is the efficiency of the machine?60%40%2%50%54. Which of the following readings cannot be determined with a meter rule?2.50cm2.55cm2.56cm2.05cm2.00cm55. The equilibrant of two or more concurrent forces is equalto the sum of the magnitude of the forcesin magnitude to the resultant but opposite in directionin magnitude and direction to the resultantto the difference in magnitude of the forces56. Find the acceleration of a body of mass 20kg under forces of 3N and 10N acting horizontally in opposite directions0.35m/s²0.50m/s²0.15m/s²2.86m/s²57. What will be the maximum temperature if 100 gm ice at 0°C is put in 100 gm water at 80°C? (Latent heat of ice = 80 cal / gm)60°C45°C0°C35°C58. In an elastic collision:I. Energy is conserved. II. Energy is decreased III. Energy is increased IV. Linear momentum is conservedIII onlyI onlyII and IV onlyII only59. Which among the following order of decreasing wavelengths of electromagnetic waves is correct?I. Radio waves II. Infrared rays III. Visible Light IV. X-Rays I, III, II, IVII, I, IV, IIII, II, III, IVIV, III, II, I60. A ball is thrown vertically upwards from the ground with an initial velocity of 20m/s. The time spent in air by the ball is4s5s10s2s61 out of 60Time is Up!