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प्रश्न
Name the subjective property of light related to its wavelength.
उत्तर
The subjective property of light related to its wavelength is colour.
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संबंधित प्रश्न
Why is the loudness of sound heard by a plucked wire increased when mounted on a sound board?
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
How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
Give scientific reason for the following:
When a nail is hammering appears to get higher and higher in pitch.
The same musical note when played on a piano and when played on a flute sounds different.
Name one main factor on which each character such as intensity, pitch, and quality of musical sound depends.
When a gun is fired at a distance, why is it that the flash is seen almost instantaneously while the sound is heard a little later?
The frequency of the stretched string of a fixed length is f when it is plucked in the middle. Where should it be plucked so that string vibrates with frequency (i) 2f, (ii) 3f?
Draw diagrams to show these vibrations and name them.
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?
Give a scientific reason.
We can hear the movement of a mosquito's wings but we cannot hear the movement of our hands.
