Physics Past Questions v33 for (JAMB/WAEC/NECO)

Physics Past Questions v33 For (JAMB/WAEC/NECO); These Physics past questions are for students who are sitting for the following examinations

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Physics Past Questions v33 For (JAMB/WAEC/NECO)

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#1. The most suitable instrument for measuring the diameter of a thin wire is a

A) meter rule

A) meter rule

B) micrometer screw gauge

B) micrometer screw gauge

C) pair of dividers

C) pair of dividers

D) pair of engineer’s calipers

D) pair of engineer’s calipers

E) venire calipers

E) venire calipers

#2. The wave theory of light does not explain photoelectricity because

A) light waves carry little energy

A) light waves carry little energy

B) particles cannot be emitted by waves

B) particles cannot be emitted by waves

C) the frequency of light waves too high

C) the frequency of light waves too high

D) there is a threshold wavelength for electron emission

D) there is a threshold wavelength for electron emission

E) the wavelength of Light waves is too short.

E) the wavelength of Light waves is too short.

#3. A constant force acts on a body of mass 50kg and changes its speed from 20ms-1 to 90ms-1 in 10 seconds. Calculate the magnitude of the force applied.

A) 590N

A) 590N

B) 500N

B) 500N

C) 450N

C) 450N

D) 350N

D) 350N

E) 180N

E) 180N

#4. Which of the following is NOT a component of a slide projector?

A) Concave mirror

A) Concave mirror

B) Condenser

B) Condenser

C) Convex mirror

C) Convex mirror

D) light source

D) light source

E) Screen.

E) Screen.

#5. The motion of the wheel of a bicycle moving on a smooth straight road is

A) oscillatory and random

A) oscillatory and random

B) oscillatory and translational

B) oscillatory and translational

C) rotational and oscillatory

C) rotational and oscillatory

D) rotational and random

D) rotational and random

E) rotational and translational

E) rotational and translational

#6. The amplitude of oscillation of a simple pendulum bob diminishes slowly because

A) energy is applied by some external agencies

A) energy is applied by some external agencies

B) frictional forces dissipate the energy of motion

B) frictional forces dissipate the energy of motion

C) the frequency of oscillation increases with the mass of the bob

C) the frequency of oscillation increases with the mass of the bob

D) the frequency of oscillation varies with time

D) the frequency of oscillation varies with time

E) the period of oscillation varies with time.

E) the period of oscillation varies with time.

#7. Which of the following radiations has the shortest wavelength?

A) Infrared rays

A) Infrared rays

B) Light waves

B) Light waves

C) Microwaves

C) Microwaves

D) Ultraviolet rays

D) Ultraviolet rays

E) X-rays

E) X-rays

#8. Radio receivers are tuned using

A) electromagnets

A) electromagnets

B) electric motors

B) electric motors

C) Inductors

C) Inductors

D) variable capacitors

D) variable capacitors

E) variable resistors

E) variable resistors

#9. Three non-parallel coplanar forces which can be represented both in magnitude and direction by the three sides of a triangle taken in order will

A) have any one force being the equilibrant of the other two

A) have any one force being the equilibrant of the other two

B) make a body move randomly

B) make a body move randomly

C) make a body oscillate

C) make a body oscillate

D) move a body along a straight line

D) move a body along a straight line

E) rotate a body about its axis

E) rotate a body about its axis

#10. Which of the following statements is correct?

A) Alpha particles have a large mass and high penetrating power

A) Alpha particles have a large mass and high penetrating power

B) Alpha particles have a small mass and a low penetrating power

B) Alpha particles have a small mass and a low penetrating power

C) Beta partials have no mass and a high penetrating power

C) Beta partials have no mass and a high penetrating power

D) Beta particles have a large mass and a low penetrating power

D) Beta particles have a large mass and a low penetrating power

E) Gamma rays have no mass and a high penetrating power

E) Gamma rays have no mass and a high penetrating power

#11. A box is pulled a distance s along a smooth horizontal floor by a force of magnitude F, inclined at an angle θ to the horizontal. The work done is

A) Fs cos θ

A) Fs cos θ

B) Fs cosec θ

B) Fs cosec θ

C) Fs sec θ

C) Fs sec θ

D) Fs sin θ

D) Fs sin θ

E) Fs tan θ

E) Fs tan θ

#12. A radio station broadcasts at a frequency of 400KHz. If the speed of the wave is 3.0 ×10-8 ms-1, calculate the wavelength of the radio wave.

A) 1.3 × 102m

A) 1.3 × 102m

B) 3.0 × 102m

B) 3.0 × 102m

C) 2.4 × 102m

C) 2.4 × 102m

D) 5.0 × 102m

D) 5.0 × 102m

E) 7.5 × 102m

E) 7.5 × 102m

#13. Which of the following is a percussion Instrument?

A) Flute

A) Flute

B) Guitar

B) Guitar

C) Piano

C) Piano

D) Trumpet

D) Trumpet

E) Xylophone

E) Xylophone

#14. Which of the following is used for shielding radioactive fallout?

A) Aluminum

A) Aluminum

B) Lead

B) Lead

C) Iron

C) Iron

D) Plastic

D) Plastic

E) Wood

E) Wood

#15. The charge of an alpha particle can be neutralized by

A) 1 beta particle

A) 1 beta particle

B) 2 photons of gamma rays

B) 2 photons of gamma rays

C) 2 beta particles

C) 2 beta particles

D) 4 beta particles

D) 4 beta particles

E) 4 photons of gamma rays

E) 4 photons of gamma rays

#16. Calculate the peak voltage that could be obtained from a 220 Vmain supply.

A) 70.7V

A) 70.7V

B) 110.0V

B) 110.0V

C) 155.6V

C) 155.6V

D) 311.1V

D) 311.1V

E) 440.0V

E) 440.0V

#17. Which of the following is a non-renewable energy source?

A) Coal

A) Coal

B) Hydro

B) Hydro

C) Ocean waves

C) Ocean waves

D) Solar

D) Solar

E) Tides

E) Tides

#18. Which of the following is NOT a component of an a.c. generator?

A) Armature

A) Armature

B) Carbon brushes

B) Carbon brushes

C) Magnet

C) Magnet

D) Slip ring

D) Slip ring

E) Split rings

E) Split rings

#19. When a yellow card is viewed in blue light, It will appear

A) black

A) black

B) orange

B) orange

C) purple

C) purple

D) red

D) red

E) white

E) white

#20. Mercury does NOT wet glass because

A) glass is an amorphous substance

A) glass is an amorphous substance

B) the adhesive force is greater than the cohesive force

B) the adhesive force is greater than the cohesive force

C) the cohesive force is greater than the adhesive force.

C) the cohesive force is greater than the adhesive force.

D) mercury has very high thermal conductivity

D) mercury has very high thermal conductivity

E) mercury is opaque.

E) mercury is opaque.

#21. The length of a simple pendulum is increased by a factor of four. By what factor is its period Increased?

A) 0.25

A) 0.25

B) 0.5

B) 0.5

C) 1.66

C) 1.66

D) 2

D) 2

#22. Which of the following pairs is an example of translucent bodies?

A) Cardboard and moon

A) Cardboard and moon

B) Clear water and glass

B) Clear water and glass

C) Frosted glass and waxed paper

C) Frosted glass and waxed paper

D) Oiled paper and brick

D) Oiled paper and brick

E) Wood and metal sheet

E) Wood and metal sheet

#23. A stone of mass 0.7 kg is projected vertically upward with a speed of 5 ms-1. Calculate the maximum height reached. [g =10ms-2]

A) 1.25m

A) 1.25m

B) 1.50m

B) 1.50m

C) 2.50m

C) 2.50m

D) 3.75m

D) 3.75m

E) 5.00Nm

E) 5.00Nm

#24. Calculate the magnitude of the force due to a magnetic field of 0.40T on an electron moving perpendicular to the field with a speed of 4.00 × 106ms-1 (e 1.60 × 10-19C]

A) 6.40 × -10

A) 6.40 × -10

B) 6.40× 10-13N

B) 6.40× 10-13N

C) 2.56 × 10-13N

C) 2.56 × 10-13N

D) 1.60 × 10-12N

D) 1.60 × 10-12N

E) 2.30 × 10-11N

E) 2.30 × 10-11N

#25. A voltage of 240V is connected to the primary coil of a the rating of the primary turns to the secondary turns if the voltage available at the secondary coil is 15V

A) 0.06

A) 0.06

B) 0.9

B) 0.9

C) 1.6

C) 1.6

D) 16

D) 16

E) 36

E) 36

#26. Two metals A and B lose the same quantity of heat when their temperatures drop from 20°C to 15°C. If the specific heat Capacity of A Ii thrice that of B, calculate the ratio of the mass of A to that of B.

A) 3:01

A) 3:01

B) 4:03

B) 4:03

C) 3:04

C) 3:04

D) 1:02

D) 1:02

E) 1:03

E) 1:03

#27. The following are derived units EXCEPT

A) kg m-3

A) kg m-3

B) N

B) N

C) Ns

C) Ns

D) m3

D) m3

E) kg

E) kg

#28. A 12V battery supplies a current of 0.4A to a lamp. Calculate the resistance of the lamp.

A) 30.00

A) 30.00

B) 4.80

B) 4.80

C) 3.00

C) 3.00

D) 0.30

D) 0.30

E) 0.03

E) 0.03

#29. Which of the following is a desirable property of a fuse Wire?

A) High expansively

A) High expansively

B) High thermal conductivity

B) High thermal conductivity

C) Low density

C) Low density

D) Low electrical resistivity

D) Low electrical resistivity

E) Low melting point

E) Low melting point

#30. The angle between the geographic and the magnetic meridians at a place on the earth’s surface is the

A) angle of declination

A) angle of declination

B) angle of depression

B) angle of depression

C) angle of dip.

C) angle of dip.

D) latitude of the place

D) latitude of the place

E) longitude of the place

E) longitude of the place

#31. An object is placed in front of a concave mirror whose radius of curvature is 12cm. If the magnification of the Image produced is 1.5, how far is the object from the mirror?

A) 8cm

A) 8cm

B) 10cm

B) 10cm

C) 15cm

C) 15cm

D) 18cm

D) 18cm

E) 20cm

E) 20cm

#32. Which of the statements is/are true of two bodies involved in an inelastic collision? After collision. I. the kinetic energy increases II. The momentum decreases III. Their velocities are the same.

A) I only

A) I only

B) II Only

B) II Only

C) III only

C) III only

D) I and II only

D) I and II only

E) II and III only

E) II and III only

#33. 491 K is equivalent to

A) 273 °C

A) 273 °C

B) 218 °C

B) 218 °C

C) 373 °C

C) 373 °C

D) 491 °C

D) 491 °C

E) 764 °C

E) 764 °C

#34. Which of the following is a percussion instrument?

A) bell

A) bell

B) flute

B) flute

C) guitar

C) guitar

D) piano

D) piano

E) organ

E) organ

#35. The velocity of sound in air will be doubled if it's absolute temperature is

A) Quadrupled

A) Quadrupled

B) Constant

B) Constant

C) Halved

C) Halved

D) Doulbed

D) Doulbed

#36. A force of 200N acts between two objects at a certain distance apart. The value of the force when the distance is halved is

A) 400N

A) 400N

B) 200N

B) 200N

C) 100N

C) 100N

D) 800N

D) 800N

#37. If two inductors of inductances 3H and 6H are arranged in series, the total inductance is

A) 9.0H

A) 9.0H

B) 18.0H

B) 18.0H

C) 0.5H

C) 0.5H

D) 2.0H

D) 2.0H

#38. Am elastic material has a length of 36cm when a load of 40N is hung on it and a length of 45cm when a load of 60N is hung on it. The original length of the string is

A) 12cm

A) 12cm

B) 20cm

B) 20cm

C) 18cm

C) 18cm

D) 15cm

D) 15cm

#39. The figure above shows three capacitors, 2μF, 3μF and 6μF connected in series. If the p.d across the system is 12V, the p.d, across the 6μF capacitor is

A) 4V

A) 4V

B) 12V

B) 12V

C) 2V

C) 2V

D) 6V

D) 6V

#40. If the distance between two point charges its increased by a factor of four, the magnitude of the electrostatic force between them will be

A) 1/4 of its former value

A) 1/4 of its former value

B) 1/16 of its former value

B) 1/16 of its former value

C) 1/2 of its former value

C) 1/2 of its former value

D) 4 times its former value

D) 4 times its former value

#41. In the figure above, the work done by the force of 100N inclined at an angle of 60o to the object dragged horizontally to a distance of 8m is

A) 800J

A) 800J

B) 600J

B) 600J

C) 100J

C) 100J

D) 400J

D) 400J

#42. In the circuit diagram of a transistor above, the terminal P, Q and R represent

A) EMITTER, BASE and COLLECTOR

A) EMITTER, BASE and COLLECTOR

B) COLLECTOR, EMITTER and BASE

B) COLLECTOR, EMITTER and BASE

C) BASE, COLLECTOR and EMITTER

C) BASE, COLLECTOR and EMITTER

D) BASE, ENITTER and COLLECTOR

D) BASE, ENITTER and COLLECTOR

#43. Two liquids L1 and L2 are contained in a U - tube. The height and the density of L1 are 8 cm and 103 kgm-3 respectively. If the density of L2 is 800 kgm-3, its height measured from the same level is

A) 8 cm

A) 8 cm

B) 10 cm

B) 10 cm

C) 16 cm

C) 16 cm

D) 12 cm

D) 12 cm

#44. 106J of heat is required to boil off completely 2kg of a certain liquid. Neglecting heat lost to the surroundings, the latent heat of vaporization of the liquid is

A) 2.0 x 106J kg-1

A) 2.0 x 106J kg-1

B) 5.0 x 106J kg-1

B) 5.0 x 106J kg-1

C) 2.0 x 105J kg-1

C) 2.0 x 105J kg-1

D) 5.0 x 105J kg-1

D) 5.0 x 105J kg-1

#45. The figure above shows a plot of angles of deviation through a glass prism when light is incident at θ degrees on the prism. The incident angle that produces the minimum deviation is

A) 20o

A) 20o

B) 18o

B) 18o

C) 35o

C) 35o

D) 25o

D) 25o

#46. The value of F in the figure above when in equilibrium is

A) 10N

A) 10N

B) 12N

B) 12N

C) 20N

C) 20N

D) 27N

D) 27N

#47. In the figure above, the coefficient of static friction is 0.5. If the tension in the string is T, the acceleration of the system in motion is

A) 5 ms-2

A) 5 ms-2

B) 15 ms-2

B) 15 ms-2

C) 3 ms-2

C) 3 ms-2

D) 9 ms-2

D) 9 ms-2

#48. If the system above is in equilibrium, the tension in the string Q is

A) 11N

A) 11N

B) 9N

B) 9N

C) 4N

C) 4N

D) 6N

D) 6N

#49. Two charged particles are projected into a region where there is a magnetic field perpendicular to their velocities. if the charges are deflected in opposite directions, which of the following statements is true of the charge?

A) the charge must be of opposite sign

A) the charge must be of opposite sign

B) positive charges are more in number

B) positive charges are more in number

C) the charges are electrically neutral

C) the charges are electrically neutral

D) the charges are of the same sign

D) the charges are of the same sign

#50. The resistance of a pieces of wire of lenght 20m are crossed-sectional area 8 x 10 6m2is? [Resistivity of the wire = 4 x 10-7 Ω m]

A) 5.0 Ω

A) 5.0 Ω

B) 0.5 Ω

B) 0.5 Ω

C) 10.0 Ω

C) 10.0 Ω

D) 1.0 Ω

D) 1.0 Ω

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