2019
Which property of a wave remains constant when the wave travels from one medium into another?
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2019 WAEC SSCE Physics Past Questions
2019
A device consumes 100 W of power when connected to a 120 V source. Calculate its resistance.
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2019
An electron of mass 9.1 x 10\(^{-31}\) kg moves with a speed of 2.0 x 10\(^6\) ms\(^{-1}\)round the nucleus of an atom in a Circular path of radius6.1 x 10\(^{11}\)m.Calculate the centripetal force acting on the electron…
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2019
An electron of mass 9.1 x 10\(^{-31}\) kg moves with a speed of 2.0 x 10\(^6\) ms\(^{-1}\)round the nucleus of an atom in a Circular path of radius 6.1 x 10(^{11}\)m.Determine the angular speed of the electron.
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2019
Which of the following devices is used for storing electric charges?
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2019
The diagram above illustrates a meter bridge circuit under balanced condition. Determine the value of x.
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2019
Which of the following statements is the correct reason for using soft iron in making the armature or an electric bell?
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2019
An a.c. the generator can be converted to a d.c. generator by replacing the
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2019
In the actual exam, a setup will be provided, where you'll use a battery, a key, a voltmeter, a standard resistor, a resistance box, and connecting wires to perform an electrical experiment. The steps include measuring t…
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2019
In an actual practical exam, a setup will be provided, consisting of a converging lens and holder, a screen, a ray box with an illuminated object pin, and a meter rule. The lens is initially positioned to form a sharp im…
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2019
In the actual exam, a setup will be provided, including a stopwatch, a meter rule, a split cork, a retort stand and clamp, a pendulum bob, a piece of thread, and other necessary apparatus. The experiment involves setting…
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2019
(a) (i) Define atomic spectra. (ii) Differentiate between emission spectra and absorption spectra.(b)The diagram above illustrates an electron transition from energy level n = 3 to n = 1. Calculate the:(i) energy of the…
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2019
The diagram above illustrates a structure of a typical photocell.(i) Identify each of the parts labelled A and B. (ii) State one function each of A and B (iii) Einstein s photoelectric equation can be written as E = hf…
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2019
(a) (i) Define force and state its S.I unit. (ii) List the two types of solid friction. (b) A car travelling at a constant speed of 30 ms-1 for 20 s was suddenly decelerated when the driver sighted a pot-hole. It took t…
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2019
(a) (i) Explain latent heat. (ii) State two factors that affect the rate of evaporation of a liquid (b) Explain each of the following observations: (i) On a dry day, water in a clay pot is cooler than water in a closed p…
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2019
(a) (i) State Newton s Law of Universal Gravitation.(ii) Define gravitational field.(b) (i) Derive the equation relating the universal gravitational constant, G, and the acceleration of free fall, g, at the surface of th…
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2019
(a) Define diffusion(b) State two factors that affect the rate of diffusion
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2019
(a) State the principle of operation of fibre optics. (b) State two applications of fibre optics in medicine.
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2019
Explain each of the following terms as used in Electronics.(a) free electrons;(b) holes.
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2019
List three magnetic elements that determine the earth s magnetic field at a point.
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