Physics
Related Questions
Write true or false for each statement:
(a) Sound can travel in vacuum.
(b) Sound is a form of energy.
(c) Sound can only be produced by vibrating bodies.
(d) Larger is the amplitude, feeble is the sound.
(e) The frequency is measured in hertz.
(f) Loudness depends on frequency.
(g) Waveforms of two different stringed instruments can be the same.
(h) Female voice is shriller than the male voice.
(i) A ticking clock sound is heard late when heard through a metal.
(j) Sound waves with frequencies lower than 20 Hz are called ultrasonic sound and sound waves with frequencies above 20,000 Hz are called infrasonic sound.
Match the following:
Column A Column B (a) Vibrations cause (i) absorb sound (b) A shriller sound is (ii) second (c) Unit of frequency (iii) sound (d) Unit of time period (iv) of high pitch (e) Curtains (v) hertz What is sound?
How is sound produced?