Question 281
In the photoelectric effect, what happens when light of frequency below the threshold frequency is incident on a metal surface?Modern physicsModern physicshard
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Question 282
A satellite moves in a circular orbit around Earth with constant speed. Which statement is true about its acceleration?MechanicsMechanicshard
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Question 283
Which instrument is most suitable for measuring the length of a pencil with the highest precision?MeasurementsMeasurementseasy
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Question 284
What happens to the temperature of a substance during a phase change at constant pressure?HeatHeatmedium
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Question 285
What type of wave is a sound wave?WavesWaveseasy
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Question 286
If the resistance in a circuit doubles while voltage remains constant, what happens to the current?ElectricityElectricitymedium
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Question 287
What causes the deflection of a charged particle moving in a magnetic field?MagnetismMagnetismmedium
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Question 288
A pendulum completes 20 oscillations in 40 seconds. What is its frequency?MechanicsMechanicseasy
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Question 289
What is the unit of electric charge in the SI system?ElectricityElectricityeasy
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Question 290
Which instrument is best suited for measuring the volume of an irregular solid?MeasurementsMeasurementseasy
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