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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.
Electrons were discovered by
In a slide wire bridge, the balance is obtained at a point 25cm from one end of wire 1m long. The resistance to be tested is connected to that end and a standard resistance of 3.6\(\Omega\) is connected to the other end of the wire. Determine the value of the unknown resistance
During the transformation of matter from the solid to the liquid state, the heat supplied does not produce temperature increase because
Lamps in domestic lightings are usually in
A train has an initial velocity of 44m/s and an acceleration of -4m/s\(^2\). Calculate its velocity after 10 seconds
The value of T in the figure above is
According to kinetic molecular model, in gases
A metal rod has a length of 100cm at 200\(^oC\). At what temperature will its length be 99.4cm. If the linear expansivity of the material of the rod is 2 x 10\(^{-5}C^{-1}\)
When blue and green colours of light are mixed, the resultant colour is
If a body moves with a constant speed and at the same time undergoes an acceleration, its motion is said to be
The limiting frictional force between two surface depends on
I. the gaseous reaction between the surfaces
II. the nature of the surfaces in contact
III. the relative velocity between the surfaces
A nuclide is represented by \(_{32}^{70}B\). Determine its neutron-proton ratio
In which of the following fields is radioisotopes not used?
Which of the following radiations has the longest wavelength?
In which of the following situations is photoelectric effect employed?
I. Automatic devices for switching on light at dusk
II. Automatic doors in departmental stores
III. Automatic devices for switching on air conditioners
IV. Automatic voltage stabilizers
Which of the following is emitted in a process of natural radioactivity?
A student uses two compass needles to investigate the magnetic field around a bar magnet. Which of the following diagrams show the correct directions of the needles?
In a series R-L-C circuit, R = 10\(\Omega\), \(X_{c}\)= 4\(\Omega\) and \(X_{L}\) = 9\(\Omega\). The impedance of the circuit is
In which of the following activities is an induction coil not useful?
Which of the following statements about magnetic lines of force is not correct? They