23/04/2020Senior Class WAEC/NECO/UTME Mock Exams(Physics) 0Comments by Gate Academy Please, fill out the information below to continue. NAME EMAIL PHONE NUMBER 1. The ozone layer protects us from ultra violet rays visual radiation radio waves infrared radiation2. The direction of the path taken by light is called beam lines ray locus3. Two cars moving in the same direction have speeds of 100km/h and 130km/h. What is the velocity of the faster car as measured by an observer in a slower car? 200km/h 130km/h 100km/h 230km/h 30km/h4. Which of the following quantities has the same unit as the Watt? force x time force x acceleration force x distance force x velocity5. A boy drags a bag of rice along a smooth horizontal floor with a force of 2N applied at an angle of 60° to the floor. The work done after a distance of 3m is 6J 3J 5J 4J6. A vector quantity can only be completely described when ________ and _______ are mentioned. distance and specified displacement magnitude and motion magnitude and direction moment and momentum7. Radio waves belong to the class of waves whose velocity is about 3 × 10^6 m/s 3 × 10^-8 m/s 34 m/s 3 × 10^8 m/s8. Which of the following represents the correct precision if the length of a piece of wire is measured with a meter rule? 35.0mm 35.01mm 35mm 35.00mm9. The dimensions of surface tension are MT² M/T² M/L/T² M/L/T10. In order to remove the error of parallax when taking measurements with a meter rule, the eye should be focused slantingly towards the left on the markings vertically downwards on the markings vertically upwards on the markings slantingly towards the right on the markings11. A ball is thrown vertically upwards from the ground with an initial velocity of 20m/s. The time spent in air by the ball is 10s 4s 5s 2s12. Which of the following readings cannot be determined with a meter rule? 2.00cm 2.05cm 2.56cm 2.50cm 2.55cm13. Boyle's law may be written as P1VI = P2V2 P1T1 = P2T2 P1V1/T1 = P1V1/T2 V1 = V2/T1T214. 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 is 63.6°C 84.6°C 66.7°C 75.0°C15. What is the relationship between mechanical advantage (MA), velocity ratio (VR) and efficiency in percentage? E = MA/VR × 100% MA = E × VR MA = 1/E × 100% VR = 1/(sinθ×MA)16. Which of the following is equivalent to Kgm/s? Ns N/s Nms J/s17. Which of the following is a vector quantity? current current density mass altitude time18. Which of the following can be used to measure accurately to three decimal places in centimeters? micrometer screw gauge meter rule none of the above ruler vernier calliper19. A piece of rubber 10cm long stretches 6mm when a load of 100N is hung from it. What is the strain? 0.06 0.6 6 60 0.00620. A vernier scale was formed by dividing a length of 19mm into 20 equal parts. If this vernier is used with a main scale marked in mm, what is the smallest distance that can be measured? 0.005mm 0.05mm 0.001mm 0.5mm 0.1mm21. The ice point and steam points on a thermometer corresponds to X and 80mm respectively. A temperature of 60°C corresponds to 52mm on the thermometer. The value of X is 8mm 20mm 10mm 4mm22. 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 cm³ 36.2 cm³ 72.8 cm³ 24.3 cm³23. 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 is 90° 36.87° 136.87° 0° 53.13°24. 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) 45°C 0°C 35°C 60°C25. Galvanometer can be converted into a voltmeter by using a high resistance wire in series a low resistance wire in series a low resistance wire in parallel a high resistance wire in parallel26. Which is the least possible error in using a rule graduated in cm? 1.0cm 2.0cm 0.5cm 0.2cm 3.5cm27. Persistence of vision is the principle behind? Periscope Spectroscope Camera Cinema28. One of the following readings represents the measurement of the length of a metal rod using vernier callipers. 5.16cm 5cm 5.160cm 5.165cm 5.0cm29. Radio waves belong to the class of waves whose velocity is about 3 × 10^8 m/s 34 m/s 3 × 10^-8 m/s 3 × 10^6 m/s30. The resultant of two forces acting on an object is maximum when the angle between them is 90° 180° 270° 0° 45°31. The general gas law can be written as V/T = constant P/T = constant PV = constant PV/T = constant32. Light from the laser is ________. Dispersed light Composite Monochromatic Incoherent33. 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. Which of the following is a fundamental unit? Watts Ampere Newton Joules35. Which of the following quantities are scalar? I. electric potentialII. momentumIII. kinetic energyIV. torque all of the above II, III & IV only I & III only none of the above II & III only36. With an increase in pressure the melting point of water will increase remain unaffected decrease first increase and then decrease37. In an elastic collision:I. Energy is conserved. II. Energy is decreased III. Energy is increased IV. Linear momentum is conserved III only II only II and IV only I only38. Which of the following is not a luminous object? The moon The sun A star A lit candle39. Which of the following instruments has a reading accuracy of 0.5mm? micrometer screw gauge protractor vernier callipers spring balance meter rule40. The external parts of an object can be measured accurately through the use of which scientific instrument? None of the above Vernier caliper Micrometer screw guage Meter rule41. A lorry travels 10km northwards, 4km eastwards, 6km southwards, 4km westwards to arrive at a point Q. What is the total displacement? 4km north 14km east 24km south 24km north 6km west42. When water is heated from 0°C to 100°C, the volume of water first increases, then decreases decreases gradually first decreases, then increases increases gradually43. A vector of magnitude 5 units in the north direction is combined with another vector to give zero resultant. The other vector is 5 units in the west direction 10 units in the north direction 5 units in the south direction 5 units in the east direction 10 units in the south direction44. At what temperature will the density of water be maximum? 4° C 32° C - 4° C 0° C45. The period of revolution round the sun is maximum by which among the following planets? Venus Mars Mercury Earth46. Calculate the gravitation force of attraction between two planets of 10^24 kg and 10^27 kg separated by a distance of 10^20 m. 8.6 N 6.56 N 7.5 N 6.67 N47. 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, II & III Only I & II Only I, III & IV Only I & III Only48. 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 is 160km/h N30°W 40km/h N31°E 117km/h N31°W 117km/h N65°W 54km/h N60°E49. The velocity v of a particle in time t is given by the equation V = 10 + 2t². Find the instantaneous acceleration after 5 seconds. 20m/s² 5m/s² 10m/s² 15m/s² 60m/s²50. Which of the following physical quantities is NOT a vector? magnetic induction velocity force electric field intensity work51. If an object is placed at a height of 10 m above the ground at a stationary point. It possess what type of energy? Potential energy Stationary energy Vibrational energy Mechanical energy52. Two points on a velocity time graph have co-ordinates (5s, 10m/s) and (20s, 20m/s). Calculate the mean acceleration between the two points. 0.83m/s² 1.50m/s² 2.00m/s² 0.67m/s²53. An example of a scalar quantity is momentum acceleration due to gravity velocity weight electric charge54. The physical quantity that has the same dimensions as impulse is? pressure surface tension energy momentum torque55. The international agreed system of units (S.I) for physical measurements are? cm, g, s lb, ft, s g, m, s kg, cm, s kg, m, s56. Which among the following is the best conductor of electricity? Gold Copper Silver Lead57. In order to remove the error of parallax when taking measurements with a meter rule, the eye should be focused Vertically downwards on the markings Slantingly towards the right on the markings Slantingly towards the left on the markings Vertically upwards on the markings58. Which among the following are primary colors? Red, Green, Blue Red, Magenta, Yellow Blue, Yellow, Green Yellow, Violet, Blue59. 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. 108m/s 52.57m/s 72m/s 84m/s 60m/s60. 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? 2.6N 18N 8N 65N 12N61 out of 60Time is Up!