by Sunday | Jan 9 | Physics WAEC
A. 2.5Ω B. 5.0Ω C. 8.0Ω D. 10.0Ω Correct Answer: Option B = 5.0Ω Explanation r = resistance of the galvanometer l = current through galvanometer = 20mA or 0.02A V1 = p.d across the galvanometer = I X r = 0.02 X r : V1 = 0.02r V2 = p.d across the multiplier = 8 –...
by Sunday | Jan 9 | Physics WAEC
A. photoelectric effect B. heisenberg’s uncertainty principle C. compton effect D. wave-particles paradox Correct Answer: Option A – photoelectric effect Explanation The photoelectric effect is the emission of electrons when electromagnetic radiation, such...
by Sunday | Jan 9 | Physics WAEC
A. ferrite substance B. paramagnetic substance C. ferromagnetic substance D. diamagnetic substance Correct Answer: Option A – ferrite substance Explanation Ferrite magnets are non-conductive aferromagnetic ceramic compounds derived from iron oxides such as...
by Sunday | Jan 9 | Physics WAEC
A. maximum motor force if the current reverses its direction B. no motor force of it is parallel to the field C. no motor force if it is perpendicular to the field D. a motor force with constant direction if either the current or the magnetic field is reversed Correct...
by Sunday | Jan 9 | Physics WAEC
A. 3.0 x 10−5s B. 1.0 x 10−4 s C. 1.0 x 104s D. 3.0 x 104s Correct Answer: Option B = 1.0 x 10−4 s Explanation The relation between period and frequency is that one is the inverse of the other. By definition: Frequency = 1/period. or period = 1/frequency → 1/ 10,000...
by Sunday | Jan 9 | Physics WAEC
A. move in a circle B. repel each other C. remain stationary D. attract each other Correct Answer: Option D – attract each other Explanation Two conductors with current flowing in the same direction will...
by Sunday | Jan 9 | Physics WAEC
A. 2.5 cm B. 25.0 cm C. 40.0 cm D. 80.0 cm Correct Answer: Option D = 80.0 cm Explanation The power of a lens is defined as the reciprocal of its focal length in metres: P = 100/f → 2.5 = 100/f where P is the power in diopters and f is the focal length in metres. 2.5...
by Sunday | Jan 9 | Physics WAEC
A. make the deflection of the needle proportional to the current B. increase the sensitivity of the galvanometer C. decrease the magnetic flux produced by the magnet D. make the permanent magnet stronger Correct Answer: Option B = increase the sensitivity of the...
by Sunday | Jan 9 | Physics WAEC
A. doppler effect B. beat C. interference D. resonance Correct Answer: Option B – beat Explanation Beat, in physics, the pulsation caused by the combination of two waves of slightly different frequencies.
by Sunday | Jan 9 | Physics WAEC
A. u = 15cm only B. u = 30cm only C. M < 15cm only D. u > 30cm only Correct Answer: Option D = u > 30cm only Explanation Objects at a distance greater than two times of the focal length produces a real image, inverted and diminished in size. → 2 * 15 = 30cm :...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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