2007 JAMB UTME Physics Past Questions

2007

The phenomenon of light bending round an obstacle is?

2007

The instrument that measures both a.c and d.c is?

2007

A 40 kW electric cable is used to transmit electricity through a resistor of resistance 2.0Ω at 800 V. The power loss as internal energy is?

2007

A conductor has a diameter of 1.00 mm and length 2.00m. if the resistance of the material is 0.1Ω, its resistivity is?

2007

If two charged plates are maintained at a potential difference of 3 kv, the work done in taking a charge of 600 µC across the field is?

2007

A charge 50 µc has electric field strength of 360 NC-1 at a certain point. The electric field strength due to another charge 120 µc kept at the same distance apart and in the same medium is?

2007

Silicon doped with aluminum and germanium doped with arsenic become?

2007

The bond that forms a semiconductor is?

2007

The energy E of a photon and it's wavelength are related by Eλ = X. the numerical value of X is?[h = 6.63 x 10-34js, c = 3 x 108 ms-1]

2007

A radioactive substance has a half-life of 20 days what fraction the original radiation nuclei will remain after 80 days?

2007

A 120 V, 60 W lamp is to be operated on 220 V a.c. the supply mains. calculate the values of non-inductive resistance that would be required to ensure that the lamp is run on current value.

2007

The figure above shows 4 forces 3N, 10N, 3√3N and 6N acting on a particle P. The resultant of he four forces is

2007

The ratio of the coefficient of linear expansion of two metals ∝1/∝2 is 3:4. If, when heated through the same temperature change, the ratio of the increase in length of the two metals, e1/e2 is 1:2, the ratio of the orig…

2007

A blacksmith heated a metal whose cubic expansivity is 6.3 x 10-6K-1. The areal expansivity is

2007

A boy drags a bag of rice along a smooth horizontal floor with a force of 2N applied at the angle of 60o to the floor. The work done after a distance of 3m is

2007

In the diagram above, a rod 50 cm long of uniform cross-section is suspended horizontally on a fulcrum, F, by the action of two forces. What is the weight of the rod?

2007

From the diagram above, the bob of the pendulum has the fastest speed at

2007

The instantaneous value of the induced e.m.f as a function of time is ε = εo sin ωt where εo is the peak value of the e.m.f. The instantaneous value of the e.m.f., one quarter of the period is

2007

In the diagram above , if the magnetic field points into the paper and the force on a current - carrying conductor points upwards, what is the direction of the current?

2007

Three cells each of e.m.f 1.5 V and internal resistance 2.5Ω are connected as shown in the diagram above. Find the net e.m.f and the internal resistance

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