1. The frequency of a tuning fork that vibrates 4000 times in 4 s is _______.   1500 Hz   1250 Hz   1000 Hz   750 Hz   Hint Half-n-half Clue   2. When the movement of a vibrating particle is perpendicular to the direction of the wave, it is termed _______ wave motion.   transverse   longitudinal   3. The frequency of a note that is one octave higher than a note of 1024 Hz is _______.   1032 Hz   1056 Hz   1280 Hz   8192 Hz   Half-n-half Clue   4. A note of 250 Hz travels through a solid. If the velocity of sound in the solid is 3500 m/s, the wavelength is _______.   1 m   7.0 m   14 m   21 m   Half-n-half Clue   5. A low-pitched sound is very shrill in nature.   True   False   6. The maximum displacement of a vibrating body from its mean position is called _______.   frequency   amplitude   time period   Half-n-half Clue   7. The velocity of a wave is equal to the product of the _______ and the wavelength.   time period   frequency   amplitude   Half-n-half Clue