Question 161
What is the principle underlying the function of an electric transformer?ElectricityElectromagnetismmedium
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Question 162
If a metal rod is heated, what happens to its length?HeatThermal Expansionmedium
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Question 163
A force of 10 N acts on a mass of 2 kg. What is the acceleration produced?MechanicsNewton's Laws of Motioneasy
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Question 164
A magnet is moved towards a coil of wire. What is induced in the coil?MagnetismElectromagnetismmedium
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Question 165
What is the unit of work done in the International System (SI)?EnergyWork and Energyeasy
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Question 166
If 500 J of heat energy is supplied to 2 kg of water initially at 20°C, what is the temperature rise? (Specific heat capacity of water = 1000 J/kg°C)HeatHeat Capacitymedium
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Question 167
What is the wavelength of a wave with frequency 500 Hz and speed 340 m/s?WavesWave Propertiesmedium
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Question 168
What is the total current flowing in a circuit with two resistors 4 Ω and 6 Ω connected in series to a 12 V battery?ElectricityElectric Circuitsmedium
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Question 169
What is the effect on a magnetic field when the current in a wire is reversed?MagnetismMagnetic Fieldseasy
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Question 170
A pendulum has a period of 2 seconds. What is its frequency?WavesOscillationseasy
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