Physics Past Questions v14 for (JAMB/WAEC/NECO)

Physics Past Questions v14 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
WAEC GCE
NECO GCE
NABTEB
NABTEB GCE

Physics Past Questions v14 For (JAMB/WAEC/NECO)

Results

D) I and III only

E) II and III only

A) Red and blue

B) Orange and green

C) Red and indigo

D) Violet and green

E) Yellow and red

A) the winding of the transformer should be made of high resistance wire

B) the core should be made of thin sheets of metal

C) no magnetic material should be used to make the core

D) the flux linking the primary with the secondary coils should be minimum

A) voltaic cell

B) emision of electrons by incident radiation

C) emision of protons by incident electrons

D) photographic plate

A) heat dissipation

B) production of eddy currents

C) excessive current discharge

D) excessive voltage distance

A) kinetic energy

B) potential difference

C) electromotive force

D) electrical energy

A) low density

B) high thermal conductivity

C) low electrical resistivity

D) low melting point

A) north pole lies in the northern hemisphere

B) geographic and magnetic meridians coincide

C) earth's magnetic flux is entirely horizontal at a place where the magnetic dip is zero

D) earth's magnetic flux is entirely vertical at a place where the magnetic dip is zero

A) i and iv only

B) i and ii only

C) i, ii, iii only

D) i, ii, iii and iv

A) in front of the retina

B) on the retina by a converging lens

C) behind the retina by a diverging lens

D) in front of the retina, a distance 2F from the lens

A) Red and blue

B) Green only

C) Red and green

A) increase the external pressure

B) reduce the external pressure

C) heat more rapidly at the same pressure

D) reduce the external pressure by a quarter

A) i and ii only

B) i and iii only

C) i and iii only

D) i, ii, and iii

A) both the frequency of the wave and the wavelength are decreased

B) the frequency of the wave is decreased while the wavelength is increased

C) the frequency of the wave is unaltered while the wavelength is decreased

D) the frequency of the wave is decreased while the wavelength is unaltered

A) refraction of light

B) rectilinear propagation of light

C) defraction of light

D) reflection of light

A) 0.05kgm-3

B) 1.25kgm-3

C) 1.30kgm-3

D) 1.36kgm-3

A) collide less frequently with the walls of the container

B) have the same average kinetic energy

C) break up into smaller molecules

D) decrease in number

A) i and ii only

B) i and iii only

C) ii and iii

D) i, ii, and iii only

A) diffusion

B) brownian motion

C) diffraction

D) crystallization

A) nature of the liquid

B) relative velocity between the liquid layers

C) area of the surfaces in contact

D) temperature of the liquid

E) normal reaction between the liquid layers

A) Sodium chloride

C) Copper (II) tetraoxosulphate (VI)

E) Germanium

A) has cubic structure while amorphous solid has hexagonal structure

B) has regularly-repeating pattern while an amorphous solid has not

C) is white while amorphous solid is yellow

D) is always hard while amorphous solid is always soft

E) melts on heating while an amorphous solid sublimates on heating.

A) I and II only

B) I and III only

C) I and IV only

D) I, II and III only

E) I, II III and IV

B) I and II only

C) I and III only

D) II and IV only

E) I, II, III and IV

A) Surface tension

B) Hydrostatic upthrust

C) Viscosity

D) Diffusion

A) a suspended- coil vanometer

B) a moving-cell ammeter

C) a d.c generator

D) an electric motor

E) an induction coil

B) molecules

C) Electrons

A) 8.00 x 106NC-1

B) 4.00 x 106NC-1

C) 4.00 x 10-4NC-1

D) 2.00 x 10-4NC-1

E) 2.50 x 10-1NC-1

A) 0.0009Ω/π

A) birds can withstand high p.d. of the electric power cables

B) any accumulated charge on the birds is quickly dissipated

C) the feet of the birds are well insulated

D) the current is a.c. and has particular direction

E) there is no p.d between the birds and the cables

A) Yellow and red

B) Orange and green

C) Violet and blue

D) Blue and green

E) Red and indigo

A) 7 x10-20N

B) 7 x 10-5N

A) 1.7 x 10-4V

B) 3.4x10-4V

C) 1.5x10-1V

D) 6.0 x103V

E) 1.2 x104V

A) sin50o/sin40o

B) sin40osin50o

C) sin90o/sin50o

D) sin40o/sin90o

E) sin90o/sin40o

A) astigmatism

B) long sightedness

C) loss accommodation

D) short sightedness

E) colour blindness

D) I and III only

E) II and III only.

A) At the focal point

B) At the centre of curvature

C) Beyond the centre of curvature

D) Between the focal point and the pole

E) Between the focal point and the center of curvature

A) sound wave

B) transverse wave

C) longitudinal wave

D) stationary wave

E) mechanical wave

A) a larger mass of air is set vibrating by the table top

B) the whole table vibrates in resonance

C) the whole table has acquired a larger frequency

D) the fork and table have the same frequency

E) the amplitude of the vibrating fork is increased.

A) volume of P is greater than that of Q

B) specific heat capacity of P is higher than that of Q

C) density of P is greater than that of Q

D) density of P is lower than that of Q

E) specitic heat capacity of P is lower than that of Q.

A) translatory motion of the molecules of the liquid

B) increased vibration of the molecules of the liquid about their mean positions

C) expansion of the liquid as it is heated

D) latent heat of vaporization of the liquid

E) ability of the liquid to evaporate at all temperatures

A) Wrapping it in cotton wool

B) painting it black

C) Placing it in a vacuum

D) Placing it on rubber supports

E) Keeping it in a closed wooden box

A) thermal motion ceases

B) the temperature of a gas is 273oC

C) ice melts

D) the volume of a real gas is maximum

E) the pressure of a real gas is maximum

A) 6.25 x 10-14N

B) 1.60 x10-13N

C) 5.00 x 10N

D) 1.00x102N

E) 2.00x1O2N

Recent Updates

Free JAMB Subject Combination Tool

Physics Past Questions v14 for (JAMB/WAEC/NECO)

Student Village

Physics Past Questions v14 for (JAMB/WAEC/NECO)

Results

#1. Which of the following is/are TRUE of nuclear fission? I. A heavy nucleus is split into two nuclei of comparable masses II. Two light nuclei are joined together to form a heavier nucleus III. The total mass of the products is less than that of the reactants

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

#3. A radioactive substance has a half-life of 3 minutes. After 9 minutes, the count rate was observed to be 200. What was the count rate at zero time?

#4. What is the reading of the vernier scale above?

#5. Two horizontal forces, 10N and 8N and another force F1 inclined at 30 to the vertical acting as shown in the diagram above, keep the body P in equilibrium, The weight of the body is

#6. What is the average velocity of the sprinter whose velocity time graph is as shown above

#7. A force of 5N act at a point Y on a rod XYZ as shown in the diagram above, if XY is 2m. What is the moment of the force about point X?

#8. What precaution should a manufacturer take to ensure that energy loss in a transformer is minimized?

#9. A substance has a half of 3mins. after 6mins. the count rate was observed to be 400. What was its count rate at zero time?

#10. The photocell works on the principle of the

#11. Electrical power is transmitted at a high voltage rather than low voltage because the amount of energy loss is reduced due to

#12. The total energy required to send a unit positive charge round a complete electrical circuit is the

#13. Which of the following is an essential physical property of the wires used for making fuses?

#14. In a resonance tube experiment, the effective length of the air column for the first resonance is 20cm when set into vibration by a tuning fork of frequency 480Hz. Neglecting and effect, the velocity of sound in air is

#15. An organic pipe closed at one end is 80cm long. Determine the frequency of the fundamental note assuming that the speed of sound in air is 340ms-1

#16. A sonometer wire of length 100cm under a tension of 10N, has a frequency of 250Hz. Keeping the length of the wire constant, the tension is adjusted to produce a new frequency of 350Hz. The new tension is

#17. One of the properties of the earth's magnetic field is that the

#18. Which of the following statements are true of an insulated charged body carrying positive charge? i. it contains excess positive charges. ii. it creates an electric field. iii. it possesses potential energy. iv. it carries electric current.

#19. An object which is 3cm high is placed vertically 10cm in front of a concave mirror. If this object produces an image 40cm from the mirror, the height of the image is

#20. What must be the distance between an object and a converging lens of focal length 20cm to produce an erect image two times the object height?

#21. For a short sighted person, light rays from a point on a very distant object is focused

#22. When light is incident on an object which is magenta in colour, which of the following colour would be absorbed?

#23. Which of the following conditions will make water boil at a temperature of 100oC when the atmospheric pressure is 750mmHg?

#24. Which of the following statements? i. land and sea breezes are natural convection currents. ii. convection may occur in liquids or gasses but not in solids. iii. the vacuum in a thermos flask prevents heat loss due to convection only.

#25. A wave disturbance travelling in air enters a medium in which its velocity is less than that in air. Which of the following statements is true about the wave medium?

#26. Shadows and eclipses result from the

#27. 40m3 of liquid is mixed with 60m3 of another liquid Q. If the density of P and Q are 1.00kgm-3 and 1.6kgm-3 respectively, what is the density of the mixture?

#28. The resistances of platinum wire at the ice and steam points are 0.75 ohm and 1.05 ohm respectively. Determine the temperature at which the resistance of the wire is 0.90 ohm

#29. The pressure of a gas when cooled at constant volume will decrease because the molecules

#30. 1kg of copper is transferred quickly from boiling water to a block of ice. Calculate the mass of ice melted, neglecting heat loss. [specific heat capacity of copper 400Jkg-1K-1 and latent heat of fusion of ice 333 x 103Jkg-1]

#31. An inclined plane which makes an angle of 30o with the horizontal has a velocity ratio of

#32. What is the length of liquid column in a barometer tube that would support an atmospheric pressure of 102000Nm-2 if the density of the liquid is 2600kgm-3? [g = 10ms-2]

#33. Which of the following is a fundamental unit?

#34. A car moving with a speed of 90kmh-1 was brought uniformly to rest by the application of the brakes in 10s. How far did the car travel after the brakes were applied?

#36. A simple pendulum makes 50 oscillations in one minutes. Determine its period of oscillation

#37. A plane inclined at 30o to the horizontal has an efficiency of 50%. Calculate the force parallel to the plane required to push a load of 120N uniformly upn the plane

#38. Which of the following concept is not an evidence of the particle nature of matter?

#39. A cell of e.m.f. 1.5V and internal resistance of 2.5Ω is connected in series with an ammeter of resistance 0.5W and a resistor of resistance of 7.0Ω. Calculate the current in the circuit.

#40. The nucleon number and the proton number of a neutral atom of an element are 238 and 92 respectively. What is the number of neutrons in the atom?

#41. A metal is illuminated with a radiation of energy 6.88eV If the kinetic energy of the emitted electrons is 1.5OeV, calculate the work function of the metal.

#42. Viscosity in a liquid does not depend on the

#43. Which of the following is not crystal?

#44. What is the difference between a crystalline and an amorphous solid? A crystalline solid

#47. Water does not drip through an open umbrella of silk material unless the inside of the umbrella is touched. Which of the following phenomena is responsible for this?

#49. How long will it take to heat 3 kg of water from 28oC to 88oC in an electric taking a current of 6 A from an e.m.f. source of 220V?

#50. Which of the following particles conduct electricity through salty water?

#51. What is the value of R when G shows no deflection in the circuit illustrated above?

#52. A charge of 1.0 x 10-5 Coulombs experience force of 40N at a certain point in space. What is the electric field intensity?

#53. If the frequency of the ac. circuit illustrated above is 500/π Hz what would be the reactance in the circuit? Inductance (L) = 0.9H, Capacitance (C) =

#54. Calculate the resistance of the filament of a lamp rates 240 V, 40 W

#55. Birds can perch safely on overhead electric power cables without being electrocuted because

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

#57. Given that the gravitational constant is 7 X 10-11 Nm2kg-2, what is the force of attraction between 106kg mass of lead hanging one metre away from a 103kg mass of iron?

#58. Calculate the current in the 3Ω resistor shown in the diagram above.

#59. What is the electric potential energy between two protons each of charge q and at a distance of r apart? (Permittivity of free space = εo)

#60. A work of 30 joules is done is transferring 5 millicoulombs of charge from a point B to a point A in an electric Held. The potential difference between B and A is

#61. The diagram above shows an incident ray A, inclined at angle of 50o to the interface CB. The ray OB is found to lie along the surface. What is the refractive index of the medium X with respect to air?

#62. The eye defect illustrated by the diagram above is

#63. A simple microscope forms an image twice the size of the object. If the focal length of the lens of the microscope is 20m, how far is the object from the lens?

#64. A stone is dropped into the middle of a pool of water. Which of the following statements is/are correct? I, Spherical waves are set up in the water. II. The water moves outwards to the sides of the pool. III. Energy is transmitted outwards from the centre of disturbance

#65. A concave mirror of radius of curvature 20cm has a pin placed at 15cm from its pole. What will be the magnification of the image formed?

#66. A parallel beam of light is to be obtained from the headlamp ofa car. At which of the following positions should the source of light be placed from the pole of its spherical minor?

#67. When the direction of vibration of the particles of a medium is perpendicular to the direction of travel of a wave the wave transmitted is known as

#68. A bat emits a sound wave at a speed of 1650.0ms-1 and receives the echoes 0.15s later. Calculate the distance of the bat from the reflector

#69. A tuning fork sounds louder when its stem is pressed against a table top than when held in air because

#70. The diagram above represents part of a wave motion in air. If the wave travels with a speed of 300ms-1, calculate the frequency of the wave.

#71. Two solids P and Q of equal mass are heated to the same temperature and dropped simultaneously into two identical containers X and Y containing equal volumes of water at room temperature. The temperature of X will rise higher than that of Y only if the

#72. Heat transfer by convection in a liquid is due to the

#73. Which of the following is not a suitable method for reducing loss of heat from a piece of hot iron?

#74. The body P shown in the diagram above is in equilibrium. If the mass Q of the body is 10kg, calculate the tension T in the string. (Take g = 10ms2)

#75. An object weighs 10.0 N in air and 7.0 N in water. What is its weight when immersed in a liquid of relative density 1.5?

#76. The absolute zero temperature is defined as the temperature at which

#77. A cube made of a metal of linear expansivity is warmed through a temperature of t. lf the initial volume of the cube is V what is the increase in volume of the cube?

#78. Dry hydrogen is trapped by pellet of mercury in a uniform capillary tube closed at one end. If the length of the column of hydrogen at 27°C is 1.0m, at what temperature will the length be 1.20m?

#79. Two forces each of 4 N act on the opposite sides of a rectangular plate as shown in the diagram above. Calculate the magnitude of g the couple acting on the plate.

#80. The diagram above represents a portion of a micrometer screw 20 gauge. What is its reading?