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NECTA Physics – Tanzania

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Question 251

Which law states that the current through a conductor between two points is directly proportional to the voltage across the two points?
ElectricityElectricitymedium

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Question 252

When a magnet is broken into two pieces, what happens to the magnetic poles?
MagnetismMagnetismmedium

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Question 253

What is the de Broglie wavelength associated with an electron moving at a velocity v?
Modern physicsModern physicshard

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Question 254

A block of metal is heated and its temperature rises from 20°C to 80°C. If its specific heat capacity is 0.5 J/g°C and mass is 200 g, how much heat energy is absorbed?
HeatHeatmedium

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Question 255

Which of the following instruments is most appropriate for measuring the length of a small object with high precision?
MeasurementsUnits and Measurementseasy

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Question 256

During a change of state from liquid to gas, which of the following remains constant?
HeatThermal Properties of Mattermedium

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Question 257

The wavelength of a wave is 2 meters and its frequency is 5 Hz. What is the speed of the wave?
WavesWave Propertiesmedium

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Question 258

A charged particle moves perpendicular to a uniform magnetic field. Which of the following best describes the path of the particle?
MagnetismMagnetic Effects of Currentmedium

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Question 259

Which of the following is a direct evidence for the particle nature of light?
Modern physicsQuantum Physicshard

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Question 260

If the density of a material is 8000 kg/m³ and an object made of this material has a volume of 0.005 m³, what is its mass?
MeasurementsDensity and Related Quantitiesmedium

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