17 solutions available
Question 1Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of their:(i) loudness(ii) pitch?
Question 2Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their:(i) loudness, and(ii) pitch.
Question 3Two waves have the same pitch but their amplitudes are in the ratio of 1 : 2. Draw a figure to show the two waves.
Question 4Obtain relationship between the time period and frequency.
Question 8If the amplitude of a wave is doubled, what will be the effect on its loudness?
Question 9Name the unit in which the loudness of sound is expressed.
Question 10Why is the loudness of sound heard by a plucked wire increased when mounted on a sound board?
Question 11State three factors on which loudness of sound heard by a listener depends.
Question 12What determines the pitch of a sound?
Question 13Name the characteristic of sound related to its frequency.
Question 14Which characteristic of sound makes it possible to recognize a person by his voice without seeing him?
Question 15State the factors that determine(a) the pitch of a note.(b) the loudness of the sound heard.(c) the quality of the note.
Question 16Name the characteristic of the sound affected due to a change in its:(a) amplitude(b) wave form(c) frequency
Question 17How is the pitch of a sound in a guitar changed if:(a) a thin wire is used(b) a wire under less tension is used?
Question 5Two musical notes of the same pitch and same loudness are played on two different instruments. Their wave patterns are as shown in...
Question 6Figure shows four waves A, B, C and D.Name the wave which shows(a) a note from a musical instrument,(b) a soft note,(c) a shrill note.
Question 7What happens when a lighted candle is placed in front of a loudspeaker making a loud and steady noise. Give reason.