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WAEC Physics – Nigeria

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Question 131

In a nuclear reaction, the mass of the products is less than the mass of the reactants. What happens to the missing mass?
Nuclear physicsNuclear Reactions and Energyhard

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Question 132

A wire of length L and cross-sectional area A stretches by an amount ΔL under tensile force F. Which of the following expresses Young's modulus Y?
ElasticityElasticity and Young's modulusmedium

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Question 133

What is the electric potential at a point 0.5 m from a point charge of +4 μC in vacuum? (Take k=9×10⁹ Nm²/C²)
Electricity and magnetismElectric potential and Capacitancehard

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Question 134

A car moves in a straight line with a constant speed of 20 m/s. What is its acceleration?
Motion (1D and 2D)Motion in one dimensioneasy

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Question 135

If a force of 10 N acts on a mass of 2 kg, what is the acceleration produced?
Forces and Newton's lawsNewton's Second Laweasy

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Question 136

Which of these quantities is conserved in a perfectly elastic collision?
Work, energy, powerWork and energymedium

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Question 137

What is the period of a simple pendulum that completes 40 oscillations in 80 seconds?
Simple harmonic motionOscillations and simple harmonic motioneasy

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Question 138

A wire of length L and radius r is stretched by a force F. Which of the following correctly expresses the stress on the wire?
ElasticityStress and strainmedium

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Question 139

What is the pressure exerted by a column of water of height 5 m, given density of water as 1000 kg/m³ and g = 9.8 m/s²?
Pressure and fluidsFluid pressuremedium

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Question 140

Which wave property describes the number of oscillations per second?
Waves and oscillationsWave propertieseasy

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