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प्रश्न
If the amplitude of a wave is doubled, what will be the effect on its loudness?
If the amplitude of a wave is doubled, how is its loudness affected?
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उत्तर
Loudness will be four times because loudness is directly proportional to the square of amplitude.
संबंधित प्रश्न
An enemy plane is at a distance of 300 km from a radar. In how much time the radar will be able to detect the plane? Take velocity of radio waves as 3 x 108 ms-1
The frequency is measured in second.
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
- Which of the following quality determines the loudness of a sound wave?
- wavelength
- frequency and
- amplitude
- How is loudness related to the quantity mentioned above in part (a)?
Explain the following and illustrate your answer by drawing appropriate diagram:
Pitch
Name the subjective property of light related to its wavelength.
Name the factors which determine the loudness of a note.
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?
Draw a diagram to show the waveforms of a pure note and a musical note, of the same pitch and same loudness.
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?
