Physics Past Questions v30 for (JAMB/WAEC/NECO)

Physics Past Questions v30 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 v30 For (JAMB/WAEC/NECO)

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#1. When the pressure of a fixed mass of gas is doubled at constant temperature, the volume of the gas is

A) increased four times

A) increased four times

B) doubled

B) doubled

C) unchangeable

C) unchangeable

D) halved

D) halved

#2. The volume of a given mass of an ideal gas at 327k and 9.52 x 104 Pa is 40cm3. calculate the volume of the gas at 273k and 1.034 x 105Pa.

A) 68.23cm3

A) 68.23cm3

B) 47.91cm3

B) 47.91cm3

C) 44.60cm3

C) 44.60cm3

D) 30.75cm3

D) 30.75cm3

#3. A wave of weight length 0.30m travels 900m in 3.0s, calculate its frequency

A) 68.0Hz

A) 68.0Hz

B) 225.0Hz

B) 225.0Hz

C) 1000Hz

C) 1000Hz

D) 750.0Hz

D) 750.0Hz

#4. Which of the following condition is necessary for the occurrence of total internal reflection of light?

A) light must travel from an optical less dense to a denser medium

A) light must travel from an optical less dense to a denser medium

B) the angle of incidence must be equal to the critical angle

B) the angle of incidence must be equal to the critical angle

C) the angle of incidence must be greater than the critical angle

C) the angle of incidence must be greater than the critical angle

D) the angle of refraction must be 90o

D) the angle of refraction must be 90o

#5. A metal rod of length 100cm is heated through 100oC, calculate the change in length of the rod [linear expansivity of the material of the rod is 3 x 10-6K-1]

A) 4mm

A) 4mm

B) 3mm

B) 3mm

C) 2mm

C) 2mm

D) 1mm

D) 1mm

#6. The heat capacity of a calorimeter is the amount of energy required to

A) change the temperature of 1kg of the calorimeter by 1k

A) change the temperature of 1kg of the calorimeter by 1k

B) change 1kg mass of the calorimeter to liquid at the same temperature

B) change 1kg mass of the calorimeter to liquid at the same temperature

C) change the temperature of the calorimeter

C) change the temperature of the calorimeter

D) melt the calorimeter into liquid at a constant temperature

D) melt the calorimeter into liquid at a constant temperature

#7. Which of the following statement about latent heat of vaporization is correct? It

A) weakens the adhesive force between molecules of a liquid and those of its container

A) weakens the adhesive force between molecules of a liquid and those of its container

B) breaks completely the force of attraction completely between the molecules of a liquid

B) breaks completely the force of attraction completely between the molecules of a liquid

C) add to the heat content of a liquid

C) add to the heat content of a liquid

D) increases the cohesive forces between liquid molecules

D) increases the cohesive forces between liquid molecules

#8. A force acts on a body for 0.5s changing its momentum from 16.0kg ms-1 to 21.0kgms-1, calculate the magnitude of the force

A) 42.0N

A) 42.0N

B) 37.0N

B) 37.0N

C) 32.0N

C) 32.0N

D) 10.0N

D) 10.0N

#9. A moving object is said to have a uniform acceleration if its

A) displacement decreases at a constant rate

A) displacement decreases at a constant rate

B) speed is directly proportional with time

B) speed is directly proportional with time

C) velocity increases by equal amount in equal time intervals

C) velocity increases by equal amount in equal time intervals

D) velocity varies inversely with time

D) velocity varies inversely with time

#10. The period of an oscillatory motion is defined as the

A) average of the time used in completing different numbers of oscillations

A) average of the time used in completing different numbers of oscillations

B) time to complete a number of oscillations

B) time to complete a number of oscillations

C) time to complete one oscillation

C) time to complete one oscillation

D) time taken to move from one extreme position to another

D) time taken to move from one extreme position to another

#11. The mass on a loaded spiral spring oscillates vertically between two extreme positions P and R equidistant from the equilibrium position Q. Which of the following statements about the system is not correct

A) the momentum of the mass is maximum at Q

A) the momentum of the mass is maximum at Q

B) the elastic potential energy of the spring is maximum at Q

B) the elastic potential energy of the spring is maximum at Q

C) the kinetic energy of the mass is maximum at P

C) the kinetic energy of the mass is maximum at P

D) the total energy of the system is always constant

D) the total energy of the system is always constant

#12. A ball f mass 5.0kg hits a smooth vertical wall normally with a speed of 2ms-1. Determine the magnitude of the resulting impulse Options A) 2.0kgms-1 B) 10.0kgms-1 C) 5.0kgms-1 D) 2.5kgms-1A ball f mass 5.0kg hits a smooth vertical wall normally with a speed of 2ms-1. Determine the magnitude of the resulting impulse

A) 2.0kgms-1

A) 2.0kgms-1

B) 10.0kgms-1

B) 10.0kgms-1

C) 5.0kgms-1

C) 5.0kgms-1

D) 2.5kgms-1

D) 2.5kgms-1

#13. A tuber of cassava can be processed into powder. This explains the face that

A) matter can change sponteneously from one state to another

A) matter can change sponteneously from one state to another

B) matter cannot be destroyed

B) matter cannot be destroyed

C) force is required to change natter from one state to another

C) force is required to change natter from one state to another

D) matter is made up of tiny particle

D) matter is made up of tiny particle

#14. A piece of metal of relative density 5.0 weighs 60N in air. Calculate its weight when fully immersed in water

A) 4N

A) 4N

B) 5N

B) 5N

C) 48N

C) 48N

D) 60N

D) 60N

#15. Bohr’s atomic model proves most successful for the explanation of the. I. structure of the hydrogen atom; II. line spectra of the hydrogen atom; III. Multi-electron atoms. Which of the statements above is/are correct?

A) I only

A) I only

B) II only

B) II only

C) I and II only

C) I and II only

D) I and III only

D) I and III only

#16. Which of the following media allow(s) the transmission of sound wave through them? I. Air II. Liquid III. Solid.

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) I, II and III.

E) I, II and III.

#17. In the normal use of a simple microscope, a person sees an

A) inverted, virtual and magnified image

A) inverted, virtual and magnified image

B) erect, virtual and magnified image

B) erect, virtual and magnified image

C) erect, real and magnified image

C) erect, real and magnified image

D) inverted, real and magnified image

D) inverted, real and magnified image

E) inverted and real image the same size as the object.

E) inverted and real image the same size as the object.

#18. The diagrams above show lines of force in electric fields. In which of the diagrams would a positive test charge experience the least force as it moves from x to y?

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

#19. I. It retains its magnetic much longer than steel. II. It is more easily magnetized than steel. III. It is more easily demagnetized than steel. IV. It produces a stronger magnet than steel. Which combination of the above makes iron preferable to steel in the making of electromagnets?

A) I and II only

A) I and II only

B) II and III only

B) II and III only

C) I, III, and IV only

C) I, III, and IV only

D) II, III and IV only

D) II, III and IV only

#20. The resultant of two forces P and Q is least when the angle between them is

A) 0°

A) 0°

B) 45°

B) 45°

C) 60°

C) 60°

D) 90°

D) 90°

E) 180°

E) 180°

#21. A ray of light experiences a minimum deviation when passing through an equilateral triangular glass prism. Calculate the angle of incidence of the ray. [Refractive index of glass = 1.5]

A) 300.0°

A) 300.0°

B) 48.6°

B) 48.6°

C) 60.0°

C) 60.0°

D) 75.5°

D) 75.5°

E) 105.0 °

E) 105.0 °

#22. Calculate the energy stored in an inductor of inductance 0.5H when a current of 3A flows through it.

A) 15.00 J

A) 15.00 J

B) 9.45 J

B) 9.45 J

C) 6.00 J

C) 6.00 J

D) 4.50J

D) 4.50J

E) 2.25 J

E) 2.25 J

#23. The relative density of dilute tetraoxosulphate (vi) acid in a battery is measured with a

A) barometer

A) barometer

B) hydrometer

B) hydrometer

C) manometer

C) manometer

D) hypsometer

D) hypsometer

#24. A resistor connected in parallel with a galvanometer so that a large amount of current can be measured is called a/an

A) ammeter

A) ammeter

B) avometer

B) avometer

C) coil resistor

C) coil resistor

D) multiplier

D) multiplier

E) shunt.

E) shunt.

#25. A current flows in a series circuit containing a resistor, R, an inductor, L and a capacitor, C. Which of the following is true of the power dissipated in the circuit component(s)?

A) The power dissipated in L is greater than zero

A) The power dissipated in L is greater than zero

B) The power dissipated in R is zero

B) The power dissipated in R is zero

C) The sum of the power dissipated in L and C is equal to that in R

C) The sum of the power dissipated in L and C is equal to that in R

D) The sum of the power dissipated in L and C is greater than in R

D) The sum of the power dissipated in L and C is greater than in R

E) The sum of the power dissipated in L and C is zero

E) The sum of the power dissipated in L and C is zero

#26. Emission spectra are caused by

A) kinetic energy of moving atoms

A) kinetic energy of moving atoms

B) potential energy of an electron in an atom

B) potential energy of an electron in an atom

C) transition of an electron from a higher energy level to a lower energy level

C) transition of an electron from a higher energy level to a lower energy level

D) transition of an electron from a lower energy level to higher energy level

D) transition of an electron from a lower energy level to higher energy level

E) transition of excited protons in the nucleus.

E) transition of excited protons in the nucleus.

#27. Which of the following is used as a depolarizer in a Denial cell?

A) Ammonium chloride

A) Ammonium chloride

B) Copper (II) tetra Oxo sulphate (VI) solution

B) Copper (II) tetra Oxo sulphate (VI) solution

C) Manganese (IV) oxide

C) Manganese (IV) oxide

D) Tetraoxo sulphate (VI) acid

D) Tetraoxo sulphate (VI) acid

E) Water

E) Water

#28. A radioactive isotope has a half-life of 8 days. What fraction of the atoms will remain after 72 days?

A) 9.766 × 10-4

A) 9.766 × 10-4

B) 1.736 ×10-3

B) 1.736 ×10-3

C) 1.953 ×10-3

C) 1.953 ×10-3

D) 3.472 × 10-3

D) 3.472 × 10-3

E) 3.906 x 10-3

E) 3.906 x 10-3

#29. If the distance between the plates of a parallel plate capacitor is decreased, its capacitance

A) becomes zero

A) becomes zero

B) decreases

B) decreases

C) increases

C) increases

D) is halved

D) is halved

E) remains the same

E) remains the same

#30. Heat I. is a form of energy II. is measured with a thermometer III. cannot be created or destroyed IV. from a hot object is transferred through conduction only. Which of the statements above are correct?

A) I and II only

A) I and II only

B) I and III only

B) I and III only

C) I, II and III only

C) I, II and III only

D) II, III and IV only

D) II, III and IV only

E) I, II, III and IV

E) I, II, III and IV

#31. A car travels with a constant velocity of 45 kmh-1 for 20s. What distance does it cover in this time?

A) 0.025m

A) 0.025m

B) 0.250m

B) 0.250m

C) 2.500m

C) 2.500m

D) 25.000m

D) 25.000m

E) 250.000m

E) 250.000m

#32. When the same amount of current, I is passed through different wires under the same conditions, the rates of production of heat are

A) directly proportional to I

A) directly proportional to I

B) directly proportional to the resistances of the wires

B) directly proportional to the resistances of the wires

C) directly proportional to the square of the resistances of the wires

C) directly proportional to the square of the resistances of the wires

D) inversely proportional to I

D) inversely proportional to I

E) inversely proportional to the resistance of the wires

E) inversely proportional to the resistance of the wires

#33. A surface in the path of an advancing wave on which all the particles are in the same state of disturbance is called a

A) crest

A) crest

B) cycle

B) cycle

C) pulse

C) pulse

D) trough

D) trough

E) wave front

E) wave front

#34. Calculate the wavelength of light travelling with a speed of 3 × 108ms-1 and a frequency of 6.2 × 1014Hz.

A) 4.8 × 10-8m

A) 4.8 × 10-8m

B) 4.8 × 10-7m

B) 4.8 × 10-7m

C) 4.8 × 10-6m

C) 4.8 × 10-6m

D) 4.8 × 10-5m

D) 4.8 × 10-5m

E) 4.8 × 10-4m

E) 4.8 × 10-4m

#35. What is the uncertainty in the measurement of time, if the uncertainty in measuring the energy of an electron of mass 10-30 kg is 2.45 × 10-19J? h = 6.6 × 10-34

A) 1.35 ×10-15s

A) 1.35 ×10-15s

B) 2.69 × 10-15s

B) 2.69 × 10-15s

C) 4.15 × 10-15s

C) 4.15 × 10-15s

D) 9.05 × 10-15s

D) 9.05 × 10-15s

E) 1.62 × 10-14s

E) 1.62 × 10-14s

#36. A body has masses of 0.013kg and 0.012 kg in oil and water respectively. If the relative density of oil is 0.875 calculate the mass of the body.

A) 0.02 kg

A) 0.02 kg

B) 0.03kg

B) 0.03kg

C) 0.04kg

C) 0.04kg

D) 0.05kg

D) 0.05kg

E) 0.06kg

E) 0.06kg

#37. A stone is dropped from the top of a tower of height 11 .25m. Calculate the time it will take to reach the ground. [g = 10ms-2]

A) 1.00s

A) 1.00s

B) 1.50s

B) 1.50s

C) 2.25s

C) 2.25s

D) 2.50s

D) 2.50s

E) 3.00s

E) 3.00s

#38. Which to the following is NOT a fundamental unit?

A) Ampere

A) Ampere

B) Kelvin

B) Kelvin

C) Kilogramme

C) Kilogramme

D) Newton

D) Newton

E) Second

E) Second

#39. A projectile fired with initial velocity, u will attain its maximum height H when the angle of projection θ is

A) 30°

A) 30°

B) 45°

B) 45°

C) 60°

C) 60°

D) 75°

D) 75°

E) 90°

E) 90°

#40. Which property of a fluid determines its suitability as a lubricant?

A) Capillarity

A) Capillarity

B) Diffusion

B) Diffusion

C) Solubility

C) Solubility

D) Surface tension

D) Surface tension

E) Viscosity

E) Viscosity

#41. A note, A from a guitar produces a wave of amplitude 4 mm and frequency 1000 Hz. Another note, B from a whistle produces a similar waveform of amplitude 2 mm and frequency 2200 Hz. If the two notes are compared,

A) A has a higher pitch than B

A) A has a higher pitch than B

B) A is louder than B.

B) A is louder than B.

C) B has a greater speed than A

C) B has a greater speed than A

D) B is louder than A

D) B is louder than A

E) A and B have the same quality

E) A and B have the same quality

#42. The temperature at which the water vapour present in the air is just enough to saturate the air is the _______ point.

A) boiling

A) boiling

B) critical

B) critical

C) dew

C) dew

D) ice

D) ice

E) steam

E) steam

#43. Which of the following statements is true of nuclear fission?

A) Heavy nuclei combine to form new element

A) Heavy nuclei combine to form new element

B) Protons are used in bombarding heavy nucleus

B) Protons are used in bombarding heavy nucleus

C) The sum of the masses of the products is greater than the mass of the original substance

C) The sum of the masses of the products is greater than the mass of the original substance

D) Two light nuclei are made to combine to form a heavy nucleus

D) Two light nuclei are made to combine to form a heavy nucleus

E) Very large amount of energy is released.

E) Very large amount of energy is released.

#44. The frequency of a body executing simple harmonic motion when left undisturbed is known as__________ frequency.

A) damped

A) damped

B) forced

B) forced

C) free

C) free

D) natural

D) natural

E) sinusoidal

E) sinusoidal

#45. When very hot water is poured into a thin-walled glass container, it is less likely to break because

A) all parts of the container got heated-uniformly

A) all parts of the container got heated-uniformly

B) glass can withstand a very high temperature

B) glass can withstand a very high temperature

C) the molecules of glass are too far apart to cause breakages of the container

C) the molecules of glass are too far apart to cause breakages of the container

D) the outer part of the container is cooler than the inner part

D) the outer part of the container is cooler than the inner part

E) thin glass does not expand fast

E) thin glass does not expand fast

#46. An electron makes a transition from - 1.60 eV energy level to - 10.4eV energy level Calculate the energy loss due to the transition.

A) 16.64eV

A) 16.64eV

B) 12.00eV

B) 12.00eV

C) 10.40eV

C) 10.40eV

D) 8.80eV

D) 8.80eV

E) 6.50eV

E) 6.50eV

#47. A plane which is Inclined at an angle of 30 ° to the horizontal has a velocity ratio of

A) 2

A) 2

B) 1

B) 1

C) 0.87

C) 0.87

D) 0.67

D) 0.67

E) 0.5

E) 0.5

#48. A mass of 5kg is suspended from the ceiling of a lift with a light inextensible string. As the lift moves upwards with an acceleration of 2ms-2, the tension in the string is [g = 10ms-2]

A) 25N

A) 25N

B) 40N

B) 40N

C) 50N

C) 50N

D) 60N

D) 60N

E) 70N

E) 70N

#49. Which of the following is NOT an example of a percussion instrument?

A) Bell

A) Bell

B) Drum

B) Drum

C) Flute

C) Flute

D) Gong

D) Gong

E) Xylophone

E) Xylophone

#50. The time t1, t2 and t3 for 20 complete oscillations of a simple pendulum experiment are 32.0s, 34.6s and 35.5s respectively. Calculate the mean period of the pendulum.

A) 1.60s

A) 1.60s

B) 1.70s

B) 1.70s

C) 1.73s

C) 1.73s

D) 1.78s

D) 1.78s

E) 5.11s

E) 5.11s

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