Question 31
What is the wavelength of a wave with frequency 500 Hz traveling at 340 m/s?WavesWaves and Oscillationsmedium
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Question 32
Which component is used to increase the current in an electric circuit?ElectricityElectric Circuitsmedium
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Question 33
What is the direction of the magnetic field around a current-carrying conductor?MagnetismMagnetic Effects of Currenteasy
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Question 34
According to the photoelectric effect, what happens when light of sufficient frequency shines on a metal surface?Modern physicsPhotoelectric Effectmedium
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Question 35
A 2 kg object is lifted to a height of 5 m. What is its gravitational potential energy relative to the ground? (g = 10 m/s²)EnergyWork, Energy and Powereasy
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Question 36
In a nuclear reactor, which particle initiates the chain reaction?Modern physicsNuclear Physicshard
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Question 37
What is the SI base unit for measuring electric current?ElectricityElectricity and Magnetismeasy
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Question 38
A car accelerates uniformly from rest to a speed of 20 m/s in 5 seconds. What is its acceleration?MechanicsKinematics and Dynamicseasy
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Question 39
Which of the following quantities is a scalar?MeasurementsPhysical Quantities and Unitseasy
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Question 40
What is the primary energy transformation in a hydroelectric power plant?EnergyEnergy Conversion and Conservationmedium
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