Advertisements
Advertisements
प्रश्न
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
Advertisements
उत्तर
- In the past, individuals would place their ear to the rail to detect the arrival of a distant train, as they understood that sound travels more quickly through solids than through gases.
- Thus, putting their ear to the rails used to give them the idea of the arrival time of a train in advance.
संबंधित प्रश्न
Match the following
| column A | column B |
| (A) Amplitude | (1) frequency |
| (B) Frequency | (2) amplitude |
| (C) Loudness | (3)maximum displacement on either side |
| (D) Pitch | (4) presence of other frequencies |
| (E) Waveform | (5) 1/ time period |
Name three characteristics of a musical sound.
If the amplitude of a wave is doubled, what will be the effect on its loudness?
Why is the loudness of sound heard by a plucked wire increased when mounted on a sound board?
Name and define the characteristic which enables one to distinguish two sounds of same loudness, but of different frequencies, given by the same instrument.
Two musical notes of the same pitch and same loudness are played on two different instruments. Their wave patterns are as shown in figure.
How do they differ in
(a) loudness,
(b) pitch and
(c) quality
State the factors that determine
(a) the pitch of a note.
(b) the loudness of the sound heard.
(c) the quality of the note.
Which characteristics of sound will change if there is a change in its amplitude and its waveform.
What is the noise? Give an example.
