Advertisements
Advertisements
प्रश्न
A person is standing at the seashore. An observer on the ship which is anchored in between a vertical cliff and the person on the shore fires a gun. The person on the shore hears two sounds, 2 seconds and 3 seconds after seeing the smoke of the fired gun. If the speed of sound in the air is 320 ms-1 then calculate:
1) the distance between the observer on the ship and the person on the shore.
2) the distance between the cliff and the observer on the ship.
Advertisements
उत्तर
1) `d_1 = 320 xx 1.5 = 320 xx 1.5 = 640 m`
2) `d_2 = 320/2 = 160 m`
APPEARS IN
संबंधित प्रश्न
The lower the frequency of vibration, the higher is the pitch.
What do you understand by the loudness of sound?
A person standing between two vertical cliffs and 480 m from the nearest cliff shouts. He hears the first echo after 3s and the second echo 2s later. Calculate:
1)The speed of sound.
2) The distance of the other cliff from the person
How is the pitch of sound in a guitar changed if (a) thin wire is used, (b) wire under less tension is used?
Name the unit in which loudness of sound is measured.
Why is the loudness of the sound heard by a plucked wire increased when it is mounted on a sound board?
A man playing a flute is able to produce notes of different frequencies. If he closes the holes near his mouth, will the pitch of the note produced, increase or decrease? Give a reason.
Give scientific reason for the following:
When a nail is hammering appears to get higher and higher in pitch.
Three musical instruments give out notes at the frequencies listed below. Flute: 400 Hz; Guitar: 200 Hz; Trumpet: 500 Hz. Which one of these has the highest pitch?
What is meant by the ‘pitch’ of a note? Does it depend on the loudness or ‘quality’ of the ‘note’? How is pitch ‘related’ with frequency?
