2003 JAMB UTME Physics Past Questions

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2003

A positive charged rod X is brought near as uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that y has

2003

If 1.2 x 106J of heat energy is given off in 1 sec from a vessel maintained at a temperature gradient of 30Km-1, the surface area of the vessel is

2003

A 2000W electric heater is used to heat a metal object of mass 5kg initially at 10oC. If a temperature rise of 30oC is obtained after 10min, the heat capacity of the material is

2003

If the distance from a point source of sound is doubled, by what factor does the intensity decrease?

2003

A magnetic field is said to exist at a point if a force is

2003

An electron of charge 1.6 x 10-19C is accelerated between two metal plates. If the kinetics energy of the electron is 4.8 x 10-17J, the potential difference between the plate is

2003

A wire of 5Ω resistance is drawn out so that its new length is two times the original length. If the resistivity of the wire remains the same and the cross-sectional area is halved, the new resistance is

2003

In the diagram above, what would happen to the current I, if another resistor, R2, is connected in parallel to R1?

2003

The operation of an optical fibre is based on the principal of

2003

The count rate of a radioactive material is 800 count/min. If the half-life of the material is 4 days, what would the count rate be in 16 days later

2003

A ray incident on a glass prism undergoes minimum deviation when the

2003

The most suitable cell used for short interval switches in electric bells is a

2003

Which of the following pairs of light rays show the widest separation in the spectrum of white light

2003

I It retains its magnetic much longer than steel.II It is more easily magnetized than steelIII It is more easily demagnetized than steelIV It produces a stronger magnet than steel Which combination of the above makes iro…

2003

In a semi conductor junction diode, as the depletion or barrier layer is forward-biased, the layer

2003

When an alternating current given by I = 10sin (120π)t passes through a 12Ω resistor, the power dissipated in the resistor is

2003

The maximum kinetic energy of the photoelectron emitted from a metal surface is 0.34eV. If the work function of the metal surface is 1.83eV,find the stopping potential.

2003

The force on a charge moving with velocity v in a magnetic field B is half of the maximum force when the angle between v and B is

2003

A circuit has an area of 0.4m2 and consists of 50 loops of wire. If the loops are twisted and allowed to rotate at a constant angular velocity of 10 rad s-1 in a uniform magnetic field of 0.4T, the amplitude of the induc…

2003

When a nucleus is formed by bringing protons and neutrons together, the actual mass of the formed nucleus is less than the sum of the masses of the energy equivalent of this mass difference is the

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