Chapter 9: Class 10 Physics Exam Tests
Class 10 Physics MCQs - Chapter 9
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MCQ 46: The time a sound wave having frequency 2 KHz and wavelength 35 cm requires to cover the distance of 1.5 Km is
MCQ 47: Sound energy passing per second through a unit area held perpendicular to the direction of propagation of sound waves is called
MCQ 48: The characteristic of sound by which loud and faint sounds can be distinguished is known as
MCQ 49: When the frequency of sound increases, the wavelength and period
MCQ 50: For hearing distinct echoes, the minimum distance of the obstacle from the source of sound must be
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