Question 71
Which process involves heat transfer by direct contact between particles?HeatHeatmedium
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Question 72
What is the wavelength of a wave traveling at 340 m/s with a frequency of 170 Hz?WavesWavesmedium
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Question 73
If a circuit has a current of 3 A and a resistance of 4 Ω, what is the voltage across the resistor?ElectricityElectricityeasy
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Question 74
What causes the magnetic field around a current-carrying conductor?MagnetismMagnetismmedium
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Question 75
Which particle is emitted during alpha decay?Modern physicsModern physicsmedium
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Question 76
A force of 10 N moves an object 3 meters in the direction of the force. How much work is done?MechanicsMechanicseasy
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Question 77
In photoelectric effect, increasing the frequency of incident light (above threshold) leads to:Modern physicsModern physicshard
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Question 78
What instrument would be most appropriate for measuring the length of a small metal rod with precision up to 0.01 cm?MeasurementsMeasurements & Instrumentationeasy
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Question 79
If a car accelerates uniformly from rest to 20 m/s in 5 seconds, what is its acceleration?MechanicsKinematics and Dynamicseasy
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Question 80
What happens to the temperature of a pure substance during the phase change from solid to liquid?HeatThermodynamics and Phase Changesmedium
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