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Physics Past Questions v29 for (JAMB/WAEC/NECO)

Physics Past Questions v29 For (JAMB/WAEC/NECO); These Physics past questions are for students who are sitting for the following examinations


  • JAMB
  • Post-UTME / Post-JAMB
  • WAEC
  • NECO

Physics Past Questions v29 For (JAMB/WAEC/NECO)


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#1. A magnetic field is said to exist at a point if a force is

#2. If the distance from a point source of sound is doubled, by what factor does the intensity decrease?

#3. A 2000W electric heater is used to heat a metal object of mass 5kg initially at 10oC. If a temperature rise of 30oC is obtained after 10min, the heat capacity of the material is

#4. If 1.2 x 106J of heat energy is given off in 1 sec from a vessel maintained at a temperature gradient of 30Km-1, the surface area of the vessel is

#5. A positive charged rod X is brought near as uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that y has

#6. In the diagram above, if each of the resistors can dissipate a maximum of 18W without becoming excessively heated, what is the maximum power the circuit can dissipate?

#7. An open pipe closed at one end produces its first fundamental note. If the velocity of sound in air is P and t the length of the pipe, the frequency of the note is

#8. On a fairly cool rainy day when the temperature is 20oC, the length of a steel railroad track is 20m. What will be its length on a hot a dry day when the temperature is 40oC? [coefficient of linear expansion of steel = 11 x 10-6K-1]

#9. If an object is placed between two parallel plane mirrors with their reflecting surfaces facing each other, how many images of the object will be formed?

#10. The phenomenon where by the water droplets in the atmosphere combines with dust particles in the air to reduce visibility is

#11. At what position will an object be placed in front of a concave mirror in order to obtain an image at infinity?

#12. A turning fork of frequency 340Hz is vibrated just above a cylindrical tube of height 1.2m. If water is slowly poured into the tube, at what maximum height will resonance occur. [speed of sound in air = 340ms-1]

#13. By what factor will the size of an object placed 10cm from a convex lens be increased if the image is seen on a screen placed 25cm from the lens?

#14. Thermal equilibrium between two object exist when

#15. If an object just begins to slide on a surface inclined at 30o to the horizontal,the coefficient of friction is

#16. Water does not drop through an open umbrella of silk materials unless the inside of the umbrella is touched. This is due to

#17. The stylus of a phonograph record exerts a force of 7.7 x 10-2N on a groove of radius 10-5m. Compute the pressure exerted by the stylus on the groove

#18. A piece of stone attached to one end of a string is whirled round in a horizontal circle and the string suddenly cuts. The stone will fly off in a direction

#19. A 90cm uniform lever has a load of 30N suspended at 15cm from one of its ends. If the fulcrum is at the center of gravity, the force that must be applied at its other end to keep it in horizontal equilibrium is

#20. On top of a spiral spring of the force constant 500Nm-1 is placed a mass of 5 x 10-3 kg. If the spring is compressed downwards by a length of 0.02m and then released, calculate the height to which the mass is projected

#21. A test tube of radius 1.0cm is loaded to 8.8g. If is placed upright in water, find the depth to which it would sink

#22. The length of piece of glass block was measured by means of a vernier calliper as shown above. The length of the glass block is

#23. A hose of cross-sectional area 0.5m2 is used to discharge water from a water tanker at a velocity of 60ms-1 in 20s into a container. If the container is filled completely, the volume of the container is

#24. The tendency for a stationary body to continue to remain at rest when a force is applied to it is known as

#25. Which of the following statements correctly defines a simple machine? A device

#26. Which of the following factors does not affect the electric resistance of wire?

#27. A positively charged glass rod is placed near the cap of a positively charged electroscope. The divergence of the leaf is observed to

#28. Nuclear fission is preffered to nuclear fusion in the generation of energy because

#29. he silvered surface in a vacuum flask reduces heat loos due to

#30. The bar magnet illustrated in the diagram above picks up an unmagnetised steel nail X. In turn, X picks up a similar nail Y and so on. The nail are said to be magnetised by

#31. Which of the following statements is not true of the isotopes of an element? They

#32. Which of the following statements is true of ultra violet radiations? It

#33. The minimum energy required to remove an electron from an atom is known as

#34. The maximum power dissipated by a 100 omega resistor in a circuit is 4W. Calculate the voltage across the resistor

#35. One difference between a reactance and a resistance in an alternating current circuit is

#36. The direction of induced current in a straight wire placed in magnetic field is determined by using

#37. Which of the following statements about an electromagnet is correct?

#38. Which of the following statement about force is correct ?

#39. Two identical cells each of e.m.f 2v and internal resistance 1.0 omega are connected in parallel. The combination is connected to an external load of 1.5 omega . Calculate the current in the circuit

#40. A current of 10A passes through a conductor for 10s, calculate the charge flowing through the conductor

#41. Which of the following statements about the human eye and the camera is correct?

#42. The speed of sound in air is is directly proportional to

#43. A sonometer wire of linear density 0.08kg m-1 subjected to a tension of 800N is plucked. Calculate the speed of a pulse which moves from one end of the wire to the other

#44. Which of the following instruments gives a pure note when sounded?

#45. Which of the following features of an electrostatic line of force is not correct?

#46. An object is placed on the principal axis and at the centre of curvature of a concave mirror, the image of the image formed by the mirror is

#47. A converging lens produces an image four times as large as an object placed 25cm from the lens. Calculate its focal length

#48. The horizontal floor of a water reservoir appears to be 1.0m deep when viewed vertically from above. If the refractive index of water is 1.35, calculate the real depth of the reservoir

#49. A converging lens has a focal length of 5cm. Determine its power

#50. Which of the following pairs of rays shows the widest separation in the spectrum of white light?


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