2023
a. State the function of each of the following parts of a modern x-ray tube: i. heater; ii. high tension source; iii. cooling fins. b. State one reason for each of the following design features of a modern x-ray tube: i.…
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2023 WAEC SSCE Physics Past Questions
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2023
ai. Define the electric potential at a point in an electric field. ii. An uncharged body, A, was charged electrostatically by a test charge, B, using the method of induction and the method of contact. State two differen…
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2023
ai. Why are parabolic mirrors suitable for use in the headlamps of vehicles? ii. Draw a ray diagram to illustrate the answer in 10(a)(i). bi. State two applications of echoes. ii. An observer s…
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2023
a. Define each of the following terms used with simple machines: i. Pivot ii.Load iii. Efficiency. b. A truck of mass 1.2 × \(10^3\) kg is pulled from rest by a constant horizontal force of 25.2N on a leveled road. If th…
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2023
ai. State the reason why simple harmonic motion is periodic. ii. State two factors that affect the period of oscillation of a simple pendulum. iii. Sketch a graph of the total mechanical energy, E, against displacemen…
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2023
a. What is fibre optics? b. State two reasons why optical fibres are preferred to copper cables in the telecommunication industry.
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2023
a. State one difference between an intrinsic and an extrinsic semiconductor. b. Draw a circuit diagram to illustrate full wave smoothing rectification.
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2023
a. Using the kinetic theory, explain the term diffusion of fluid molecules. b. Name one phenomenon that demonstrates that light behaves as a: i. wave ii. particles
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2023
State three differences between geostationary satellites and polar satellites.
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2023
a. A projectile is fired at an angle, θ, to the horizontal with velocity, u. Show that at any time, t, during the motion, the: i. horizontal component of the velocity is independent of t; ii. vertical component of the ve…
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2023
a. Define strain energy. b. Write an expression for the energy stored, E, in a stretched wire of original length, l , cross-sectional area, A, extension, e, and Young's modulus, Y, of the material of the wire.
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2023
The force, F, acting on the wings of an aircraft moving through the air of velocity, v, and density, ρ, is given by the equation F = \(kv^xρ^yA^z\), where k is a dimensionless constant and A is the surface area of the wi…
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2023
The purpose of commutators in a direct current motor is to
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2023
The conclusive test for magnetism in a steel bar suspended horizontally at its midpoint is when the bar
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2023
Which of the following devices is associated with alternating currents only?
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2023
Which of the following equations is not a correct mirror formula? [The symbols have their usual meanings]
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2023
Which part of the human eye performs the same function as the diaphragm in a lens camera?
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2023
Two objects, A and B, accelerate from rest at uniform rates. B accelerates twice as much as A. Compared to A, B travels
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2023
Two objects, A and B, accelerate from rest at uniform rates. B accelerates twice as much as A. Compared to A, B travels
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2023
When an electron jumps directly from an orbit of n = 4 to n = 2,
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