Question 221
A body is moving with uniform acceleration. Which of the following graphs correctly represents velocity against time?MechanicsMechanicsmedium
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Question 222
What is the work done when a force of 10 N moves an object through a distance of 5 m in the direction of the force?EnergyEnergyeasy
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Question 223
Which property of a wave determines its pitch in sound?WavesWavesmedium
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Question 224
Which of the following is a ferromagnetic material?MagnetismMagnetismeasy
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Question 225
A metal rod is heated and its length increases. What happens to its density?HeatHeatmedium
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Question 226
What is the energy of a photon with frequency 6 × 10^14 Hz? (Use Planck's constant h = 6.63 × 10^-34 Js)Modern physicsModern physicshard
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Question 227
If two resistors of 4 Ω and 6 Ω are connected in series, what is the total resistance?ElectricityElectricitymedium
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Question 228
Which law states that the induced electromotive force in a circuit is proportional to the rate of change of magnetic flux through the circuit?MagnetismMagnetismhard
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Question 229
Which physical quantity is a scalar?MeasurementsUnits and Measurementseasy
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Question 230
Which of the following energy transformations occur in a hydroelectric power plant?EnergyEnergy Conversionmedium
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