JAMB Physics 2002 Past Questions

A copper cube weighs 0.25 N in air, 0.17N when completely immersed in paraffin oil and 0.15 N when completely immersed in water.The ratio of upthrust in oil to upthrust in water is

A wheel and axle is used to raise a load of 500 N by the application of an effort of 250 N. If the radii of the wheel and the axle are 0.4 cm and 0.1 cm respectively, the efficiency of the machine is

The hydrostatic blood pressure difference between the head and the feet of a boy standing straight is 1.65 x 10⁴ Nm^-2. Find the height of the boy.

A body weighing 80N stands in an elevator that is about to move. The force exerted by floor on the body as the elevator moves upward with an acceleration of 5 ms^-2 is
[g = 10ms^-2]

If the distance between two suspended masses 10kg each is tripled, the gravitational force of attraction between them is reduced by

Two force each of 10N acts on a body, one towards the north and the other towards the east.
The magnitude and the direction of the resultant force are

A particle in circular motion performs 30 oscillation in 6 seconds. Its angular velocity is

The effect of a particle in a fluid attaining its terminal velocity is that the

A coin place below a rectangular glass block of thickness 9cm and refractive index 1.5 is viewed vertically above the block. The apparent displacement of the coin is

The radiator of a motor car is cooled by

I. Temperature.
II. Density of air molecules
III. Pressure
IV. Pitch
Which of the above will affect the velocity of sound in the air

Which of the following is a characteristics of stationary waves?

To produce an enlarged and erect image with a concave mirror,the object must be positioned

the property that is propagated in a traveling wave is

Which of the following eye defects can be corrected using a cylindrical lens.

The time rate of loss of heat by a body is proportional to the

If tension is maintained on a stretched string of length 0.6m, such that its fundamental frequency of 220Hz is excited, determine the velocity of the transverse wave in the string.

A concave mirror of radius of curvature 40 cm forms a real image twice as large as the object.
the object distance is

water is a poor thermometric liquid because it

a ray of light which strikes a glass slab from air at normal incidence passes through the slab

The phenomenon that makes sound persist when its source has been removed is known as

the pressure of 3 moles of an ideal gas at a temperature of 27°C having a volume of 10^-3m³ is

Vibration in a stretched spring cannot be polarized because they are

The diagram above show s the force-extension curve of a piece of wire. The energy stored when the wire is stretched from E to F is

The diagram above shows the force (F) acting on an object through a distance (x). The work done on this object is expressed as

Calculate the refractive index of the material for the glass prism in the diagram above

From the diagram above, determine the value of the resistance X

The energy stored in a capacitor of capacitance 10μF carrying a charge of 100μC

When connected to a mains of 250V, the fuse rating in the plug of an electric device of 1 KW is

The eye controls the amount of light reaching the retina by adjusting the

An electric iron is rated 1000W, 230V. What is the resistance of its elements?

The electric field between two - point charges is shown in the diagram above. What types of charges are at X and Y?

The electromagnetic wave that can produce a heating effect on the environment is

an electric cell with nominal voltage E has a resistance of 3Ω connected across it. If the voltage falls to 0.6E, the internal resistance of the cell is

23	Na + X →	20	F +	4	He
11		9		2

What particle is X in the reaction above?

Pure silicon can be converted to a p-type by adding a controlled amount of

The energy associated with the photon of a radio transmission at 3 x 10⁵ Hz is
[h = 6.63 x 10^-34Js]

The percentage of the original nuclei of the sample of a radioactive substance left after 5 half - lives is

From the generating station to each substation power is transmitted at a very high voltage so as to reduce

The particle that is responsible for the nuclear fission in a nuclear reactor is

A transistor is used in the amplification of signals because it

The carbon-granules microphone works on the principle of change in

At what frequency would a capacitor of 2.5μF
used in radio circuit have a resistance of 250Ω

A current of 0.5 A flowing 3h Deposits 2g of metal during electrolysis. The quantity of the same metal that would be deposited by the currents of 1.5A flowing in 1h is

Which of the following statements is true of the properties of a moving coil galvanometer?

A bead travelling on a straight line wire is brought to rest at 0.2 by friction. IF the ,mass of the bead is 0.01kg and the coefficient of friction between the bead and the wire is 0.1, determine the work one by the friction
[g = 10ms²

If the total force acting on a particle is zero, the linear momentum will

The colours seen on soap bubbles are due to