CBT physics JAMB 2017 by Abbey /50 70 Created on February 18, 2020 By bolaPhysics CBT physics JAMB 2017 1 / 50 Category: Physics 1.Which is the incorrect formula for a body accelerating uniformly? a = v^ 2 − u v^2 = u^2 + 2as s = 1/2(ut) + at^2 v^2 – u^2 = 2as 2 / 50 Category: Uncategorized 2 Which of the following is not an electromagnetic radiation? x – ray Radio waves sunlight sound waves 3 / 50 Category: Uncategorized 3 Calculate the electric field intensity between two plates of potential difference 6.5V when separated by a distance of 35cm. 18.57NC ^1 53.06NC ^1 2.28NC ^1 0.80NC ^1 4 / 50 Category: Physics 4 Why do soldiers march disorderly while crossing a bridge? To prevent resonance on the bridge To set the bridge into resonance To make the b ridge collapse To spread their weight evenly on the bridge 5 / 50 Category: Physics 5 Calculate the upthrust on an object of volume 50cm3 which is immersed in liquid of density 103kgm-3 [g = 10ms-2] 0.8N 2.5N 0.5N 1.0N 6 / 50 Category: Physics 6 Under what conditions are cathode rays produced in a discharge tube? High pressure and low voltage High pressure and high voltage Low pressure and low voltage Low pressure and high volatge 7 / 50 Category: Physics 7 Under which of the following conditions is workdone A man supports a heavy food above his head with his hands A boy climbs onto a table A man pushes unto a table A woman holds a pot of water 8 / 50 Category: Physics 8 Calculate the specific latent heat of vaporization of steam of 1.13 x 106J pf heat energy is required to convert 15kg of it to water. 7.53 x 105jkg^-1 7.53 x 10^-2jkg^-1 7.53 x 104jkg^-1 7.53 x 10-3jkg^-1 9 / 50 Category: Physics 9 A cell of internal resistance 2 Ï€ supplies current to a 6 Ï€ resistor. The efficiency of the cell is 12.0% 25.0% 33.3% 75.0% 10 / 50 Category: Physics 10 Which of the following statements is NOT correct? Molecules of a liquid are stationary Brownian motion is an evidence of particle nature of matter Matter is made up of molecules The molecules of matter are in constant motion 11 / 50 Category: Physics 11 A block and tackle pulley arrangement has 6 pulleys in which an effort of 50N supports a load of 200N, calculate the efficiency of the machine 80.0% 76.6% 66.7% 60.7% 12 / 50 Category: Physics 12 Three 3ω resistance are connected in parallel what is the equivalent resistance? 1ω 9ω 3ω 0.33ω 13 / 50 Category: Physics 13 Which of the following instruments helps to maintain the correct humidity and temperature of a building? A compressor A refrigerator Air blower Air conditioner 14 / 50 Category: Physics 14 An element and its isotope only differ in the number of protons electrons ions neutrons 15 / 50 Category: Physics 15 The thermal expansion of a solid is an advantage in Balance wheel of a watch Construction of steel rail lines Construction of large steel bridges Fitting of tyres on wheels 16 / 50 Category: Physics 16 The S.I unit of moment of a force is kgm µm Jm µm^-1 17 / 50 Category: Physics 17 A block and tackle pulley arrangement has 6 pulleys in which an effort of 50N supports a load of 200N, calculate the efficiency of the machine 80.0% 76.6% 66.7% 60.7% 18 / 50 Category: Physics 18 Calculate the light of the image formed by a pinhole camera of length 12cm used to photograph an object 60cm away from the hole and 70cm high 10 cm 16 cm 5 cm 14 cm 19 / 50 Category: Physics 19 When two objects P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The mass of P is half that of Q. The ratio of the specific heat capacity pf P to Q is 1:4 4:1 1:1 2:1 20 / 50 Category: Physics 20 When the r.m.s value of a source of electricity supply is given as 240v, it means that the peak value of the supply is 240v 340v 480v 57600v 21 / 50 Category: Physics 21 Which of the following operations can be used to convert an alternative current dynamo into a direct current dynamo number of turns in the coil is increased strength of the field magnet is increased slip rings are replaced with split ring cummutator coil is wound on a soft iron armature 22 / 50 Category: Physics 22. The net capacitance in the circuit above is 80µF 6.0µF 4.0µF 2.0µF 23 / 50 Category: Physics 23 The instrument used to measure the pressure of a gas is barometer thermometer hygrometer manometer 24 / 50 Category: Physics 24 A man of mass 50kg ascends a flight of stains 5m high in 5 seconds. If acceleration due to gravity is 10ms-2 the power expended is 100w 200w 400w 500w 25 / 50 Category: Physics 25 A radio station broadcast at a frequency of 600KHZ. If the speed of light in air is 3 × 108ms-1 .Calculate the wavelength of the radio wave 2.20 × 10^3 m 5.0 × 10^2 m 5.0 × 10^5 m 11.8 × 10^11 m 26 / 50 Category: Physics 26 Which of the following is a scalar quantity? Tension Weight Impulse Mass 27 / 50 Category: Physics 27 Determine the focal length of a thin converging lens if the power is 5.0 dioptres 0.1 m 0.2 m 2.0 m 2.5 m 28 / 50 Category: Physics 28 A string of length 5cm is extended by 0.04m when a load of 0.8kg is suspended at the end. How far will it extend if a force of 16N is applied? [g = 10ms^2 ] 0.04m 0.12m 0.01m 0.08m 29 / 50 Category: Physics 29 How can energy loss be minimized through Eddy-current? By using high resistance wire By using insulated soft iron wires By using low resistance wires By using turns of wires 30 / 50 Category: Physics 30.From the diagram above, calculate the energy stored in the capacitor 4.0 x 10^-1 J 4.0 x 10^-4 J 8.0 x 10^-4 J 8.0 x 10^-2 J 31 / 50 Category: Physics 31 A constant force of %n acts for a % seconds on a mass of 5kg initially at rest. Calculate the final momentum 125kgms−1 25kgms−1 15kgms−1 0kgms−1 32 / 50 Category: Physics 32 I. Refraction II. Interference III. Diffraction Which of the above properties are common to all waves? II and III only I, II and III I and II only I and III only 33 / 50 Category: Physics 33 I. Refraction II. Interference III. Diffraction Which of the above properties are common to all waves? II and III only I, II and III I and II only I and III only 34 / 50 Category: Physics 34 Which of the following is correct about an electric cell? Primary cell produces a large current for a long time Secondary cell has a very high internal resistance Primary cell has a very low internal resistance Secondary cell has a very low internal resistance 35 / 50 Category: Physics 35 Which of the following is a semiconductor copper silicon plastic Iron 36 / 50 Category: Physics 36 Which of the following surfaces will absorbs radiant heat energy heat? white red black blue 37 / 50 Category: Physics 37 It is known that a neutron exists in a light atomic nucleus Which of the following also exists in the nucleus? An electron A β – particle β – particle proton 38 / 50 Category: Physics 38 The instrument to measure the relative density of light is thermometer hydrometer spring balance beaker 39 / 50 Category: Physics 39 What is the speed of a body vibrating at 50 cyclic per second 100 Ï€rads-1 200Ï€rads-1 50Ï€rads-1 400Ï€rads-1 40 / 50 Category: Physics 40 The action of blotting paper on ink is due to diffusion osmosis capillarity surface tension 41 / 50 Category: Physics 41 When two mirrors are placed at an angle of 900 to each other, how many images will be formed when an object is placed in front of the mirrors 5 4 3 2 42 / 50 Category: Physics 42 If silicon is doped with phosphorus, what type of semiconductor material will be formed? Zener material P-n junction n-type p-type 43 / 50 Category: Physics 43 Calculate the angle of minimum deviation of a 600 prism of a refractive index [sin-1 0.75 = 490] 38.00 19.47 16.25 49 44 / 50 Category: Physics 44 What is the cost of running seven 40 W lamps and five 80 W la mps for 12 hours of the electrical energy cost N7.00kWk? N80.00 N45.36 N65.00 N57.12 45 / 50 Category: Physics 45. From the diagram above, calculate the total current in the circuit 5.0A 3.7A 4.5A 4.0A 46 / 50 Category: Physics 46 Calculate the time taken for a mango fruit that fall from the tree 20 m to the ground [g = 10 ms -2 ] 10s 5s 4s 2s 47 / 50 Category: Physics 47 Which of the following is not a mechanical wave? wave in closed pipe radio waves water waves sound waves 48 / 50 Category: Physics 48 The velocity ratio of an inclined plane where angle of inclination in θ is Sinθ Cosθ Tanθ 1/Sinθ 49 / 50 Category: Physics 49 The volume of a fixed mass of gas is 10cm3 when its pressure is 400cmHg. Determine the volume of the gas when its pressure is 200cmHg. 30cm^ 3 40^ 3 50^ 3 20^ 3 50 / 50 Category: Physics 50 Which of the following representations is correct for an atom X with 28 electrons and 30 neutrons? 58/28 X 30/28 X 28/30 X 58/30 X Your score isThe average score is 18% LinkedIn Facebook VKontakte 0% Restart quiz No related posts. Share FacebookTwitterPinterestLinkedinWhatsappTelegramEmail Leave a Comment Cancel Reply Save my name, email, and website in this browser for the next time I comment. Δ