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WAEC Physics – Sierra Leone

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Question 121

In circular motion, which force acts towards the center of the circle?
Circular motionCentripetal forcemedium

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Question 122

Which of the following best describes simple harmonic motion (SHM)?
Simple harmonic motionCharacteristics of SHMmedium

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Question 123

A wire stretches by 0.5 mm when a force is applied. Which property of the material does this demonstrate?
ElasticityElastic behavior of materialseasy

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Question 124

Which law explains why pressure in a fluid increases with depth?
Pressure and fluidsPressure variation in fluidsmedium

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Question 125

What is the primary cause of nuclear fission?
Nuclear physicsNuclear reactionshard

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Question 126

A block moves 5 m east and then 12 m north. What is the magnitude of its resultant displacement?
Motion (2D)Motion in two dimensionsmedium

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Question 127

Which of the following best describes Newton's First Law of Motion?
Forces and Newton's lawsNewton's Laws of Motioneasy

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Question 128

An object oscillates with simple harmonic motion of amplitude 0.5 m and frequency 2 Hz. What is the maximum speed of the object?
Simple harmonic motionSimple harmonic motionmedium

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Question 129

If the pressure exerted by a fluid at a certain depth is 2000 Pa and the density of the fluid is 1000 kg/m³, what is the depth? (Take g = 10 m/s²)
Pressure and fluidsPressure in fluidsmedium

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Question 130

A ray of light passes from air into glass with refractive index 1.5. If the angle of incidence is 30°, what is the angle of refraction? (Use Snell's law)
OpticsRefraction of lightmedium

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