1998
The diagram below illustrates an a.c.source of 50V(r.m.s.), \(\frac{100}{\pi}\)Hz connected in series with an inductor of inductor of inductance L and a resistor of resistance R. The current in the circuit is 2A and the…
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1998 WAEC SSCE Physics Past Questions
1998
The frictional effect between the layers of a moving fluid is called
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1998
A radioactive nuclide of proton number X emits a \(\beta\)-particle to form a new nuclide to proton number Y. The correct equation relating X and Y is
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1998
The process of increasing the energy of an atom via inelastic collision with an electron is known as
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1998
The diagram above represents a section of a pair of vernier calipers. The reading on the instrument is
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1998
It is always not possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the
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1998
Which of the following explains the concave meniscus of water in a glass tube?
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1998
Two radioactive elements A and B have half-lives of 100 and 50 years respectively. Samples of A and B initially contain equal amounts/number of atoms. What is the ratio of the number of the remaining atoms of A to that o…
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1998
A body of mass 200g and specific heat capacity 0.4Jg-1k-1 cools from 37oC to 31oC. Calculate the quantity of the heat released by the body.
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1998
A body moving in a circle at constant speed has i. a velocity tangent to the circle ii. a constant kinetic energy ii. an acceleration directed towards the circmference of the circle ii. an acceleration directed towar…
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1998
A cell of e.m.f. 1.5V is connected in series with a resistor of resistance 3.0\(\Omega\). A voltmeter connected across the cell registers 0.9V. Calculate the internal resistance of the cell
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1998
The images formed by a diverging lens are always
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1998
A ball of mass 5.0kg hits a smooth vertical wall normally with a speed of 2ms-1 and rebounds with the same speed. Determine the impulse experienced by the ball
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1998
A ball is dropped from the top of a tower. Due to air resistance,it reaches terminal velocity. Which of the following statement(s) about its motion is/are correct? i. The acceleration of the ball is zero. ii. The net for…
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1998
In the actual exam, an image will be provided that shows a circuit setup for a potentiometer experiment. This setup includes a potentiometer wire PQ, a resistance box to set different values of R, a key K, and a jockey f…
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1998
In the actual exam, a setup will be provided that includes tracing the outline of a glass block on paper, marking specific points, and conducting an experiment to study the refraction of light. The experiment involves al…
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1998
In the actual exam, a setup will be provided, including a uniform meter rule, a knife edge, a body of mass 50g, and other necessary apparatus. The experiment involves suspending the body from the 1.0 cm mark of the meter…
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1998
(a) Explain the term photoelectric effect. (b) The diagram above represents a photocell with its associated electric circuit. Identify each of the physical quantities represented by the letters A, B, C, D, E and F(c) Wha…
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1998
(a)(i) Describe, with the aid of a circuit diagram, an experiment to measure the resistance of a wire given an ammeter of low resistance, a battery, a key, a rheostat, va high-resistance voltmeter and some connecting wir…
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1998
(a) Distinguish between heat and temperature.(b) State two physical properties of substances which may be used to measure temperature.(c) State two reasons why mercury is preferred to alcohol as a thermometric liquid.(d)…
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