2000
An electron of charge 1.6 x 10-19C and mass 9.1 x 10-31kg is accelerated between two metal plates with a velocity of 4 x 107ms-1, the potential difference between the plates is
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2000 JAMB UTME Physics Past Questions
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2000
A projection lantern is used to give the image of a slide on a screen. If the image is 24 times as large as the slide and the screen is 72.0m from the projecting lens, what is the position of the slide from the lens?
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2000
If a charged ion goes through combined electric and magnetic fields, the resultant emergent velocity of the ion is
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2000
A radio is operated by eight cells each of e.m.f. 2.0V connected in series. If two of the cells are wrongly connected, the net e.m.f. of the radio is
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2000
A gas would serve as an electrical conductor under
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2000
In a thermonuclear reaction, the total initial mass is 5.02 x 10-27kg and the total final mass is 0.01 x 10-27kg. The energy released in the process is[c = 3.0 x 108ms-1]
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2000
in a pure semiconductor, the number of electrons in the conduction band is
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2000
What optical instrument can best be constructed with converging lenses of focal lengths 50cm and 5cm?
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2000
A 2H inductor has negligible resistance and is connected to a 50/π Hz A.C. Supply. The reactance of the inductor is
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2000
A certain radioactive source emits radiations that were found to be deflected by both magnetic and electric fields. The radiations are
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2000
If the fraction of the atoms of a radioactive material left after 120 years is \(\frac{1}{64}\), what is the half-life of the material?
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2000
If the frequency of an emitted x-ray is 1.6 x 1016Hz, the accelerating potential is?[e = 1.6 x 10-19C, h = 6.63 x 10-34Js]
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2000
An electric generator with a power output of 3.0KW at a voltage of 1.5KV distributes power along cables of resistance 20.0Ω. The power loss in the cables is
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2000
Light of energy 5eV falls on a metal of work function 3eV and electrons are liberated. The stopping potential is
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2000
A conductor of length 2m carries a current of 0.8A while kept in a magnetic field of magnetic flux density 0.5T. The maximum force acting on it is
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2000
A cell of internal resistance 1Ω supplies current to an external resistor of 3Ω. The efficiency of the cell is
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2000
A travelling wave moving from left to right has an amplitude of 0.15m, a frequency of 550Hz and a wavelength of 0.01m. The equation describing the wave is
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2000
A sonometer wire is vibrating at frequency fo. If the tension in the wire is doubted while the length and the mass per unit length are kept constant, the new frequency of vibration is
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2000
A simple pendulum has a period of 17.0s. When the length is shorten by 1.5m, its period is 8.5s. Calculate the original length of the pendulum
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2000
The velocity y of a particle in a time t is given by the equation Y = 10 + 2t2Find the instantaneous acceleration after 5 seconds
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