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Create and set up a CBT environment with your preferred subjects.
Practice JAMB CBT with real UTME past questions in CBT format.
CB-WASSCE styled past question practice.
SSCE & GCE styled past question practice.
An object placed 10cm from a concave mirror of focal length 5cm would have its image
A p-n junction diode is used as?
A certain manufacturer wishes to make an n-type semiconductor. Which materials would he select for doping?
I. The number of neutrons released exceeds the number that caused the fission.
II. There is loss of mass.
III. Energy is produced.
IV. Smaller nuclei merge to form larger nuclei
which of the statement above are correct about nuclear fission?
The theory of electronic conduction in solids, which satisfactorily explains the properties of conductors, insulators and semi-conductor,is?
A radioactive element has a half life of 4 days. The fraction that has decayed in 16 days is?
One of the properties of gamma rays is that they are?
The battery connection that permits current to flow across a p-n junction is called?
The process through which free electrons leave the surface of hot metal is known as?
The energy associated with the emitted photon when a mercury atom changes from one state to another is 3.3 ev. calculate the frequency of the photon.
[e = 1.6 x 10-19c; h = 6.6 x 10-34js]
I. Work done by load is always less than the work done by effort.
II. All machines are made of levers, pulleys, screws and gear wheels.
III. A fishing rod is a machine.
Iv. Effort is always larger than load.
which of statements above about machines are true?
The correct unit of energy density is?
The component of vector X along the direction of vector Y is zero when
If the radius of the Earth is 6.4 x 10\(^6\)m, the escape velocity of a satellite from the Earth is?
[g = 10 ms\(^-2\)]
In an experiment to determine terminal velocity, as the pressure increases, the viscosity off a liquid
The motion of smoke particles from a chimney is typical of?
An ammeter of resistance 5Ω has a full-scale deflection when a current of 50 mA flows in it. The value of the resistor required to adapt it to measure a current of 5 A is?
The electrolyte in the Nickei-iron (Nife) accumulator is