IGCSE A Level Physics Certification MCQs – Mock Test 127
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MCQ 631: Output current from an LED is:
MCQ 632: At standard pressure and temperature the average speed of molecules is:
MCQ 633: A wave of frequency 1 GHz has wavelength of:
MCQ 634: Interference pattern of light and dark bands on screen is called:
MCQ 635: Microwaves have wavelength of about:
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