2004 NECO Physics Past Questions & Answers

Question 1

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.

Accepted Answer

A. 0.02 kg

Answer

B. 0.03kg

Answer

C. 0.04kg

Answer

D. 0.05kg

Answer

E. 0.06kg

Question 2

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

Accepted Answer

E. wave front

Answer

A. crest

Answer

B. cycle

Answer

C. pulse

Answer

D. trough

Question 3

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

Accepted Answer

A. all parts of the container got heated-uniformly

Answer

B. glass can withstand a very high temperature

Answer

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

Answer

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

Answer

E. thin glass does not expand fast

Question 4

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,

Accepted Answer

B. A is louder than B.

Answer

A. A has a higher pitch than B

Answer

C. B has a greater speed than A

Answer

D. B is louder than A

Answer

E. A and B have the same quality

Question 5

The general equation of a wave CANNOT be written as

Accepted Answer

E. y = A Sin 2 π f(T ± $\frac{X}{\lambda}$)]

Answer

A. y = A Sin [2 π ($\frac{t}{T}$ ± Xλ)]

Answer

B. y = A Sin [wt ± kx]

Answer

C. y = A Sin [2 $\frac{\pi}{\lambda}$ (vt ± x)]

Answer

D. y = A Sin [2π (ft ± $\frac{X}{\lambda}$ )]

Question 6

Which property of a fluid determines its suitability as a lubricant?

Accepted Answer

E. Viscosity

Answer

A. Capillarity

Answer

B. Diffusion

Answer

C. Solubility

Answer

D. Surface tension

Question 7

Calculate the magnitude of the electric field intensity in a vacuum at a distance of 25cm from a charge of 5 × 10-3C. Take ($\frac{1}{4πε0} = 9	imes10^9Nm^2C^{-2}$)

Accepted Answer

A. 7.2 × 108NC-1

Answer

B. 1.8 × 108NC-1

Answer

C. 5.6 × 108NC-1

Answer

D. 3.6 × 108NC-1

Answer

E. 1.5 × 106NC-1

Question 8

Which of these expresses the relationship between the earth’s magnetic field FE, and the field’ FB due to a magnet at neutral points? FE is

Accepted Answer

A. equal and opposite to FB

Answer

B. equal to and in the same direction with FB

Answer

C. greater than and in the same direction with FB

Answer

D. greater than and opposite to FB

Answer

E. less than and opposite to FB

Question 9

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

Accepted Answer

D. natural

Answer

A. damped

Answer

B. forced

Answer

C. free

Answer

E. sinusoidal

Question 10

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

Accepted Answer

D. 8.80eV

Answer

A. 16.64eV

Answer

B. 12.00eV

Answer

C. 10.40eV

Answer

E. 6.50eV

Question 11

How far from a hill should a boy stand to hear the echo of his clap 1 .6s later? [Speed of sound in air is 340$ms^{-1}$]

Accepted Answer

B. 272m

Answer

A. 186m

Answer

C. 544m

Answer

D. 1088m

Answer

E. 2000m

Question 12

Which of the following statements is true of nuclear fission?

Accepted Answer

E. Very large amount of energy is released.

Answer

A. Heavy nuclei combine to form new element

Answer

B. Protons are used in bombarding heavy nucleus

Answer

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

Answer

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

Question 13

Calculate the wavelength of light travelling with a speed of 3 × 108$ms^{-1}$ and a frequency of 6.2 × 1014Hz.

Accepted Answer

B. 4.8 × 10-7m

Answer

A. 4.8 × 10-8m

Answer

C. 4.8 × 10-6m

Answer

D. 4.8 × 10-5m

Answer

E. 4.8 × 10-4m

Question 14

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

Accepted Answer

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

Answer

A. Ammonium chloride

Answer

C. Manganese (IV) oxide

Answer

D. Tetraoxo sulphate (VI) acid

Answer

E. Water

Question 15

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

Accepted Answer

E. shunt.

Answer

A. ammeter

Answer

B. avometer

Answer

C. coil resistor

Answer

D. multiplier

Question 16

A force F is applied to a body P as shown in the diagram above. If the body moves through a distance, a, which of the following represents the work done?

Accepted Answer

B. Fa Cos θ

Answer

A. Fa

Answer

C. $\frac{Fa}{\cos 	heta}$

Answer

D. FaSin θ

Answer

E. $\frac{Fa}{\sin 	heta}$

Question 17

In which of the following are crystalline structures observable? I. Gas II. Liquid III. Solid

Accepted Answer

C. III only

Answer

A. I only

Answer

B. II only

Answer

D. I and III only

Answer

E. II and III only

Question 18

A body of mass 40g loses 80J of heat energy. If the specific heat capacity of the body is 400 Jkg-1, calculate the change in temperature of the body.

Accepted Answer

D. 5.0K

Answer

A. 0.2K

Answer

B. 0.4K

Answer

C. 2.0K

Answer

E. 10.0K

Question 19

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

Accepted Answer

E. 250.000m

Answer

A. 0.025m

Answer

B. 0.250m

Answer

C. 2.500m

Answer

D. 25.000m

Question 20

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

Accepted Answer

A. 2

Answer

B. 1

Answer

C. 0.87

Answer

D. 0.67

Answer

E. 0.5

Question 21

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

Accepted Answer

E. 180°

Answer

A. 0°

Answer

B. 45°

Answer

C. 60°

Answer

D. 90°

Question 22

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]

Accepted Answer

B. 48.6°

Answer

A. 300.0°

Answer

C. 60.0°

Answer

D. 75.5°

Answer

E. 105.0 °

Question 23

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

Accepted Answer

B. 2.69 × 10-15s

Answer

A. 1.35 ×10-15s

Answer

C. 4.15 × 10-15s

Answer

D. 9.05 × 10-15s

Answer

E. 1.62 × 10-14s

Question 24

Which of the following conclusion(s) can be drawn from Newton’s second law of motion? Force is proportional to I. the product of mass and acceleration II. the product of mass and velocity III. Impulse

Accepted Answer

A. I only

Answer

B. II only

Answer

C. III only

Answer

D. II and III only

Answer

E. I, II and III

Question 25

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?

Accepted Answer

B. I and III only

Answer

A. I and II only

Answer

C. I, II and III only

Answer

D. II, III and IV only

Answer

E. I, II, III and IV

Question 26

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

Accepted Answer

C. Flute

Answer

A. Bell

Answer

B. Drum

Answer

D. Gong

Answer

E. Xylophone

Question 27

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

Accepted Answer

C. increases

Answer

A. becomes zero

Answer

B. decreases

Answer

D. is halved

Answer

E. remains the same

Question 28

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

Accepted Answer

B. hydrometer

Answer

A. barometer

Answer

C. manometer

Answer

D. hypsometer

Question 29

Which to the following is NOT a fundamental unit?

Accepted Answer

D. Newton

Answer

A. Ampere

Answer

B. Kelvin

Answer

C. Kilogramme

Answer

E. Second

Question 30

For total internal reflection to occur, I. light must be travelling from an optically more dense to an optically less dense medium. II. the angle of incidence in the denser medium must be greater than its critical angle. III. the angle of refraction in the less dense medium must be equal to 90 °. Which of the statements above is/are correct?

A.I only
B.II only
C.III only
D.I and II only
E.II and III only.

Show answer

Answer: D. I and II only

Get a step-by-step AI explanation in the app Get a step-by-step AI explanation in the app

Accepted Answer

D. I and II only

Answer

A. I only

Answer

B. II only

Answer

C. III only

Answer

E. II and III only.

Question 31

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 2$ms^{-2}$, the tension in the string is [g = 10$ms^{-2}$]

Accepted Answer

D. 60N

Answer

A. 25N

Answer

B. 40N

Answer

C. 50N

Answer

E. 70N

Question 32

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 = 10$ms^{-2}$]

Accepted Answer

B. 1.50s

Answer

A. 1.00s

Answer

C. 2.25s

Answer

D. 2.50s

Answer

E. 3.00s

Question 33

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

Accepted Answer

E. 2.25 J

Answer

A. 15.00 J

Answer

B. 9.45 J

Answer

C. 6.00 J

Answer

D. 4.50J

Question 34

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

Accepted Answer

B. directly proportional to the resistances of the wires

Answer

A. directly proportional to I

Answer

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

Answer

D. inversely proportional to I

Answer

E. inversely proportional to the resistance of the wires

Question 35

A voltage supply of 12V r.m.s. and frequency 90Hz is connected to a 4 ω resistor. Calculate the peak value of the current

Accepted Answer

D. 4.2 A

Answer

A. 48.8 A

Answer

B. 30.0 A

Answer

C. 27.5 A

Answer

E. 3.0A

Question 36

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.

Accepted Answer

B. 1.70s

Answer

A. 1.60s

Answer

C. 1.73s

Answer

D. 1.78s

Answer

E. 5.11s

Question 37

Emission spectra are caused by

Accepted Answer

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

Answer

A. kinetic energy of moving atoms

Answer

B. potential energy of an electron in an atom

Answer

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

Answer

E. transition of excited protons in the nucleus.

Question 38

The rate of diffusion of gases increases with increase(s) in I. density II. temperature III, mass. Which is/are correct?

Accepted Answer

B. II only

Answer

A. I only

Answer

C. I and II only

Answer

D. II and III only

Answer

E. I, II and III

Question 39

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

Accepted Answer

C. dew

Answer

A. boiling

Answer

B. critical

Answer

D. ice

Answer

E. steam

Question 40

In which of these fields are repulsive forces NOT experienced? I. Magnetic field II. Gravitational field III. Electric field

Accepted Answer

B. II only

Answer

A. I only

Answer

C. III only

Answer

D. I and III only

Answer

E. II and III only

Question 41

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

Accepted Answer

C. 1.953 ×10-3

Answer

A. 9.766 × 10-4

Answer

B. 1.736 ×10-3

Answer

D. 3.472 × 10-3

Answer

E. 3.906 x 10-3

Question 42

Which of the statements about prism binoculars is/are correct? They I. are a pair of two telescopes mounted side by side II. reduce the optical path of the light ray from the objective to the eye piece III, present inverted and diminished image to the viewer IV. present erect and magnified image to the viewer.

Accepted Answer

D. I, II and IV only

Answer

A. I only

Answer

B. II only

Answer

C. I and II only

Answer

E. II, III and IV only

Question 43

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

Accepted Answer

E. 90°

Answer

A. 30°

Answer

B. 450°

Answer

C. 60°

Answer

D. 75°

Question 44

The component of a vector in a given direction is

Accepted Answer

D. its effective value in that direction

Answer

A. equal to the magnitude of the resultant vector in that direction

Answer

B. equal to the magnitude of the resultant vector in the opposite direction

Answer

C. its effective magnitude

Answer

E. its effective value in the opposite direction

2004 NECO Physics Past Questions

Questions

Frequently asked questions

How do I prepare for NECO Physics?

Where can I find NECO Physics past questions?

How close is the DeeepSolve CBT simulator to the real NECO?

Are the AI explanations accurate?