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17. If you go on increasing the stretching force on a wire in a guitar, its frequency. (a) increases (b) decreases (c) remains unchanged (d) None of these some random text between questions 18. A vibrating body (a) will always produce sound (b) may or may not produce sound if the amplitude of vibration is low (c) will produce sound which depends upon frequency (d) None of these 19. The wavelength of infrasonics in air is of the order of (a) 100 m (b) 101 m (c) 10–1 m (d) 10–2 m
Extraction
17. If you go on increasing the stretching force on a wire in a guitar, its frequency. (a) increases (b) decreases (c) remains unchanged (d) None of these some random text between questions 18. A vibrating body (a) will always produce sound (b) may or may not produce sound if the amplitude of vibration is low (c) will produce sound which depends upon frequency (d) None of these 19. The wavelength of infrasonics in air is of the order of (a) 100 m (b) 101 m (c) 10–1 m (d) 10–2 m