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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.
Which of the following statements about Gamma radiation is correct? Gamma radiation can
| n = \(\alpha\) | 0.06eV |
| E=3 | -1.6eV |
| E=2 | -3.7eV |
| E=1 | -5.5eV |
| E=0 | -10.4eV |
The energy levels in the mercury atom is illustrated in the table above. Calculate the ionisation energy of the atom.
The nucleon number of an atom is the total number of
Which of the following pairs of concepts constitutes complementary variables as expressess by the Heinsberg uncertainty principle?
The opposition offered to an alternating current in a C-R series circuit is known as
The diagram above illustrates two charged bodies, X and Y separated by a distance r. Each body has charge q and mass m. Which of the following statements about the electrostatic force \(F_{e}\) and gravitational force \(F_{g}\) acting between the bodies is correct?
The main reason why a.c. is transmitted at very high voltage and low current is that
A battery of e.m.f 3.0V is connected across a potentiometer wire AB of length 10\(\Omega m^{-1}\) as illustrated in the diagram above. If the jockey J makes contact at the 30cm mark, determine the resistance of length AJ and voltage across AJ.
A lamp rated 100W, 240V is lit for 5hours. Calculate the cost of lighting the lamp if 1kWh of electrical energy cost N5.
A transformer connected to a 240\(V_{r.m.s}\) has 3000 turns in its primary coil and 500 turns in its secondary coil. Calculate the output voltage.
The diagrams above illustrate electrical connections to the element of an electric pressing iron.In which of the connections is the fuse correctly fixed?
Which of the following statements is/ are correct?
I. Gravitational potential due to a mass at a point a distance r away is proportional to \(r^{2}\)
II. Gravitational field strength is a vector quantity
III. Gravitational intensity is proportional to the weight of a unit mass.
A circuit is set up as shown in the diagram above. When the key is closed, the ammeter reading will be
Which of the following objects is not a conductor of electricity?
The force per unit charge experienced at a point in a field is the
Two bar magnets are placed near each other. Which of the following diagrams correctly illustrates the magnetic field pattern formed by the pair?
The inverse of the time required for a wave to complete one full cycle is called
A converging lens of focal length 10cm forms an erect image three times the size of the real object. Calculate the distance between the image and the object.
Two plane mirrors are inclined at an angle 20° to each other. Determine the number of images formed when an object is placed between them.
The diagram above illustrates a wave setup between two fixed ends 4.0m apart. If the speed of the wave is 1.0\(ms^{-1}\), its wavelength and frequency respectively are