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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.
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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
In a longitudinal wave, compression and rarefaction are formed.
The distance from one compression to nearest rarefaction is called wavelength.
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 |
How does sound travel in air?
What is longitudinal wave?
Name three characteristics of a musical sound.
How is loudness related to the amplitude of wave?
Name the characteristic of the sound affected due to a change in its
(a) amplitude (b) waveform (c) frequency.
What is meant by the ‘loudness’ of a sound? How is it related to the intensity?
Two waves of the same pitch have their amplitudes in the ratio 2 : 3.
(i) What will be the ratio of their loudness?
(ii) What will be the ratio of their frequencies?
