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
Select one option to submit your answer.
NECTA Physics AI Practice
Train with AI-generated exam-style questions. Get instant explanations and coaching on every weak area.
Interactive mode300 questions available
Practice mode
Answer immediately. If you miss, we show exactly why your selected option is wrong.
Progress: 0/10 correct (0 answered)
Question 282
A satellite moves in a circular orbit around Earth with constant speed. Which statement is true about its acceleration?MechanicsMechanicshard
Select one option to submit your answer.
Question 283
Which instrument is most suitable for measuring the length of a pencil with the highest precision?MeasurementsMeasurementseasy
Select one option to submit your answer.
Question 284
What happens to the temperature of a substance during a phase change at constant pressure?HeatHeatmedium
Select one option to submit your answer.
Question 285
What type of wave is a sound wave?WavesWaveseasy
Select one option to submit your answer.
Question 286
If the resistance in a circuit doubles while voltage remains constant, what happens to the current?ElectricityElectricitymedium
Select one option to submit your answer.
Question 287
What causes the deflection of a charged particle moving in a magnetic field?MagnetismMagnetismmedium
Select one option to submit your answer.
Question 288
A pendulum completes 20 oscillations in 40 seconds. What is its frequency?MechanicsMechanicseasy
Select one option to submit your answer.
Question 289
What is the unit of electric charge in the SI system?ElectricityElectricityeasy
Select one option to submit your answer.
Question 290
Which instrument is best suited for measuring the volume of an irregular solid?MeasurementsMeasurementseasy
Select one option to submit your answer.