NCERT Solutions for Class 9 Science Chapter 12 - Sound Loudness :- The loudness depends on the amplitude of the sound wave. How does the sound decrease with distance? sound pressure ... Amplitude - Loudness. Bass. The same amount of energy is spread over a greater area, so the intensity and loudness of the sound is less. Answer/ Explanation (b) decibel If viewed on an oscilloscope, the loudness of a sound wave would be associated with the wave's: w) frequency x) wavelength y) velocity z) amplitude. The measured intensity of sound depends on both the distance from the source and the _____ of the sound source. Light and Sound Waves | Science Quiz - Quizizz Loudness refers to how loud or soft a sound seems to a listener. Greater amplitude waves have more energy and greater intensity, so they sound louder. human hearing and speech. FRANK Solutions for Class 10 Physics Chapter 3 - Sound ... (b) The pitch of a sound depends on its frequency. Does loudness depend on frequency? Answer & Explanation. The same amount of energy is spread over a greater area, so the intensity and loudness of the sound is less. 4. Concepts covered in Concise Physics Class 8 ICSE chapter 7 Sound are Properties of Sounds, Characteristics of a Sound Wave, Sound, Propagation of Sound, Representation of a Wave, Loudness and Intensity, Pitch (or shrillness) and . For most humans, zero dB marks the threshold for perception of sound, although loudness ultimately depends on both amplitude and frequency. Assuming the speed of sound in air is 345 m/s, determine the wavelength of the sound corresponding to the note of middle C. LOGS. 1. So to increase loudness of sound by four times, the amplitude of the vibration also to be increased by four times. The pitch of a note depends on the frequency of the source of the sound. Answer (1 of 4): Ultimately, the pitch depends on which hair cells in our inner ears vibrate most strongly in response to a sound. As you know, we are not equally sensitive to sounds of all frequencies, so the perceived loudness of a tone really depends on frequency and intensity. Answer: (a) Amplitude (b) Frequency. Many sound intensity measurements are made relative to a standard. Whereas loudness depends on the energy of the wave. So option one is correct. The wavelength of the sound increased in Figure 2. In a direct field or free field, the sound level (SPL) of a spherical wave decreases with doubling of the distance by (−)6 dB. The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves. The charts show sound waves from a musical instrument. JIPMER 2018: Loudness of sound depends on (A) Amplitude (B) frequency (C) wavelength (D) velocity. Answer/ Explanation (b) decibel D) speed. The MCQ Questions for Class 9 Physics with answers have been prepared as per the latest syllabus, NCERT books and examination pattern suggested in Standard 9 by CBSE, NCERT and KVS. It depends on the amount of energy that started the waves. Krishna Singi Oct 06, 2019 B This discussion on Loudness of sound depends upon itsa)Wavelengthb)Amplitudec)Frequencyd)Time-periodCorrect answer is option 'B'. So, option one, that is, it simply should is perfect answer for this problem. The increasing amplitudeof a sound wave, as measured in decibels (dB), generally increases the perception of loudness. The loudness of a sound depends on the amplitude (or intensity) of the wave. D) . (a) hertz (b) decibel (c) meter/second (d) second. . CBSE Class 9 Physics Sound MCQs with answers available in Pdf for free download. (a) hertz (b) decibel (c) meter/second (d) second. How high or low a sound is; depends on the frequency (greater frequency= higher pitch) Q. One can either say the sound depends on frequency, or on wavelength because the speed of the "wave" for a particular instrument or medium is fixed. Volume, or loudness, is related to the strength, intensity, pressure, or power of the sound. Amplitude is a measure of the size of sound waves. The loudness or softness of sound depends upon the amplitude of the wave. Click to see full answer. What is the unit used to measure the loudness of sound? Question 5. 6. ". The wavelength of a sound wave is 66m, calculate the frequency of the wave if the velocity of sound is 330 m/s. If the amplitude of a sound is large, then the sound produced will also be loud. . The loudness of a sound wave is determined from its amplitude. The loudness of sound depends upon its amplitude. Amazingly, many musicians, who have been trained are capable of detecting a difference in frequency between two separate sounds that are as little as 2 Hz. Loudness of sound depends upon _____ of the sound wave. That means the more the amplitude, the louder will be the sound and the less the amplitude, the low will be the sound. What is the unit used to measure the loudness of sound? from your home to lightning strike example Thus the loudness of sound of a given intensity may differ from listener to listener. The sound quality of different electronic audio devices depends on the technology used for recording and reproduction of sound, bit rate, range of sound and the performance of the system. The larger the amplitude the more energy the sound wave contains therefore the louder the sound. Loudness depends on the amplitude of the sound wave. Greater is the amplitude of vibration, louder is the sound produced by it. The maximum displacement from mean position is called its amplitude. B) shower. A sound wave will spread out after it leaves its source, decreasing its amplitude or loudness. Why does loudness depend on amplitude? The frequency and amplitude of a sound wave affect pitch and loudness respectively. The sound pressure decreases in inverse proportion to the distance, that is, with 1/r from the measuring point to the sound source, so that doubling of the distance decreases the sound pressure to a half (!) The greater the sound energy reaching our ears per second, the louder the sound will appear to be. Wave D below has a larger amplitude than wave E. This means wave D shows a LOUDER sound than wave E. A loud sound has a bigger amplitude than a soft sound. The loudness does not depend on . The loudness of sound depends on .. A its frequency B its wavelength C its speed D its amplitude Medium Answer Correct option is D its amplitude C) frequency of vibration done clear. Humans with normal hearing can hear sounds between 20 Hz and 20 kHz. The highness or lowness of a sound wave,which depends on the frequency of vibration Amplitude the measure of the vibration in pressure along a wave loudness Sound intensity as sensed by the ear and interpreted by the brain; depends mainly on the pressure wave's amplitude sound level But some of the energy is also absorbed by objects, such as the eardrum in Figure 14.5, and some of the energy is converted to thermal energy in the air. E) all of these. The loudness of sound depends upon (1) Its velocity (2) Its amplitude (3) Its pitch (4) Its frequency Answer: (2) Its amplitude The loudness of sound is directly proportional to the amplitude of the wave. Figure 14.4 shows a graph of gauge pressure versus distance from the vibrating string. So once a wavelength or frequency is established, the other is also known. It transfers more energy. Last Answer : ANSWER: Z -- AMPLITUDE. 5. The pitch of the sound depends upon. the loudness of sound depends on the amplitude of the waves that compose it, i.e. a. frequency b. power c. pitch d. wavelength _____ 2. Statement I : The pitch of the sound wave depends upon its frequency Statement I : The loudness of the sound wave depends upon its amplitudeBoth the statements are individually true and statement II is the correct explanation of statement IBoth the statements are individually true but Statement II is not the correct explanation of Statement IStatement I is true Statement II is The loudness of a sound wave depends on its amplitude. If the wavelength of sound in air at this frequency at a temperature of 20 ° would be. From about 1000 to 3000Hz, the pitch is independent of loudness, while above 3000Hz an increase in loudness causes an increase in pitch. The basic units are watts/m2 or watts/cm2 . of its initial value - not a quarter. The loudness of a . In general, the perception of loudness doubles about every 10 dB. 45) The loudness of a musical sound is a measure of the sound wave's A) frequency. Sound is a kind of. Tags: Question 22 . Loudness, being a sensation, also depends on the sensitivity of the ears of the listener. Bass, such as the bark of a truck, has a longer wavelength. Hence, pitch of sound depends upon its frequency. When the sound source moves, the frequency changes. lower frequency notes Complete info about it can be read here. IE: Short wavelengts have higher frequency. The number of wavelengths that pass a point each second. Read More. The decibel level of a sound is given by dB=10log(EE0), where E0=10−12wattsm2 and E is the intensity of the sound. The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves. Loudness depends on the amplitude of the sound wave. of its initial value - not a quarter. The relation between pitch and frequency is linear to a very close approximation. SURVEY . (a) Loudness: it is the feeling produced in the ear which helps us to differentiate between a loud and a dim sound. The loudness of a sound depends on the energy conveyed by the sound wave near the eardrum of the listener. Amplitude : It is a measure of the size of sound waves. Figure 14.4 shows a graph of gauge pressure versus distance from the vibrating string. (a) Find the intensity of a 80-decibel sound. On increasing the temperature, the speed of sound in air: (a) Increases (b) Decreases (c) Does not change (d) First increases then becomes constant. Answer: A sound with a frequency greater than 20000 Hz is called as ultrasonic sound. A stereo's speakers move back and forth a greater distance when producing a loud sound than when producing a soft sound. Loudness: The phenomenon of sound depends on the amplitude of the sound wave. Test your knowledge on Loudness Of Sound The characteristic of a sound which distinguishes a shrill sound from a hoarse one is called pitch. Complete solution: The loudness of a sound wave is determined by its association with the amplitude, all types of waves have a certain amplitude. Loudness is the property by which one can differentiate between two sounds of the same frequency and pitch. shower. How does loudness depend on amplitude? 3. There are a few ways of varying the volume of a tuning fork. The larger the amplitude the more energy the sound wave contains therefore the louder the sound. Loudness is measured in decibel 'dB'. D Pitch. Sound Section Quiz: Sound Intensity and Resonance Write the letter of the correct answer in the space provided. Noise has also intensity. Sound wave truly follows the property of refraction. They are immersed in liquid. 720Hz 680Hz 10Hz 240Hz. Answer & Explanation. Pitch of sound depends upon. Pitch depends on the frequency. The loudness of sound is depend on the amplitude of the sound wave. Of course, different musical instruments can play the same musical note at the same level of loudness, yet they still sound quite different. Check Answer and Solution for above Physics questio 5/5 (189 Views . Pitch depends on the frequency - the higher the frequency, the faster the vibration and the . A) amplitude of vibrations done clear. Answer & Explanation. Q. Q. amplitude loudness area frequency. the difference in pressure between the crest and the trough of the wave. Loudness of sound totally depends upon amplitude; on the other hand, pitch of sound depends upon wavelength of sound. Greater amplitude waves have more energy and greater intensity, so they sound louder. In which way is the sound wave in Chart 1 different from the sound wave in Chart 2? B) area of vibrating body done clear. The usual context is the measurement of sound intensity in the air at a listener's location. The loudness of the sound decreased in Figure 2. . Frequency B. Wavelength C. Amplitude D. Pitch Answer: Option C Solution (By Examveda Team) The loudness of sound is directly proportional to the amplitude of the wave. Answer (1 of 7): Sound Intensity Sound intensity is defined as the sound power per unit area. In which medium sound travels faster? > The loudness of sound depen. Loudness of a sound decreases with increase in the distance between the listener and the source. In air, sound travels at 343 m/s. or loudness of each of the interfering waves. Clearly, loudness and intensity are not exactly same. In general, the pitch is the reason behind the difference in voice quality of different individuals. Waves on a calm ocean may be less than 1 foot high. It is. If the amplitude of the sound wave is large, then the sound is said to be . The soft sound has small amplitude and louder sound has large amplitude. Greater amplitude waves have more energy and greater intensity, so they sound louder. Humans are generally capable of hearing sounds between 20 Hz and 20 kHz (although I can't hear sounds above 13 kHz). Loudness of a sound depends on the amplitude of the vibration. MCQs: Humans can hear sound up to the highest frequency of 20,000 Hz. The loudness of a sound depends on the amplitude of the sound wave. If viewed on an oscilloscope, the loudness of a sound wave would be associated with the wave's: w) frequency x) wavelength y) velocity z) amplitude. In a direct field or free field, the sound level (SPL) of a spherical wave decreases with doubling of the distance by (−)6 dB. _____ 1. A) . 46) Reverberation is a phenomenon you would be most likely to hear if you sing in the A) desert. Intensity is the characteristic of any sound. The loudness of a sound depends on the amplitude of vibration producing the sound. Read More. Amplitude and sound are directly proportional. Sound waves are longitudinal/light waves, which means the vibration is in the same/ a different direction to that of the wave. A larger amplitude means a loud sound while a smaller amplitude means a soft sound. (5.) Loudness is a physiological response of the ear to the intensity of sound. Hope it was useful Recommend (0) Comment (0) L = log (I) Where I: Intensity of sound. (a) hertz (b) decibel (c . There's no d loudness of sound does not depend on its frequency as well as it does not depend on its velocity. louder sound corresponds to a wave of larger amplitude. The unit of Frequency is called hertz (Hz). Loudness measures the sound energy reaching the ear per second and depends on the amplitude of the sound wave. It also depends on time period,wavelength,and speed. The intensity or loudness of a sound depends upon the extent to which the sounding body vibrates, i.e., the amplitude of vibration. ( The amplitude of a sound wave is the measure of the height of the wave. Loudness measures the sound energy reaching the ear per second and depends on the amplitude of the sound wave. That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength. 1 answer Loudness of a sound depends on the amplitude of the vibration producing that sound. That is why whenever crackers burn in sky, we hear the sound a bit late. Watch out a lot more about it. The amplitude of the sound depends upon the force with which an object is made to vibrate. Answer. The amplitude of the wave determines the loudness of a sound wave. What is the unit used to measure the loudness of sound? What is an ultrasonic sound? Loudness of sound depends on Examveda Loudness of sound depends on A. Category: hobbies and interests audio production. 60 seconds . A sound will be considered a high pitched sound, if its frequency is high. So, loudness of a sound depends on frequency also. B) wavelength. The loudness of sound is determined, in turn, by the intensity, or amount of energy, in sound waves. E= watts per square meter. 20 Votes) loudness of a sound depends on amplitude of the wave. Last Answer : ANSWER: Z -- AMPLITUDE. Louder sounds waves have larger amplitude pressure variations. Intensity of a sound is a physical property, but loudness is a feeling. loudness of sound pitch of sound quality of sound intensity of sound. The same amount of energy is spread over a greater area, so the intensity and loudness of the sound is less. The unit of loudness is decibel. A wavelength in a transverse wave is the distance from the beginning of the crest to the end . C) amplitude. The loudness of sound also affects the pitch up to 1000Hz. It depends on the amount of energy that started the waves. Loudness depends on wavelength/amplitude. Answer & Explanation. MCQs: When sound is incident on the surface of a medium it bounces back into the first medium. The hair cells, as the name suggests, are small columnar structures in our ears. Sound travels much slower than light—you can observe this while watching a fireworks display (see Figure 14.6 ), since the flash of an explosion is seen before its sound is heard. Last but not the least, quality of sound depends upon wavelength. By means of the eardrum and a mechanical linkage, sound . The loudness of sound does not depend on the tension and wavelength. B Wavelength. "hello students welcome to Lido learning's question and answer videos my name is pallabi and i teach math and science at leto now let's have a look at this very interesting question in front of us that is we have to state the factors that determine pitch of a node loudness of the sound heard and quality of the node so let's start with the first one which is pitch now to understand pitch we . Distance between the resting position and the maximum displacement of the wave is known as amplitude. the loudness of the sound to be louder ex) 260 cycles per second 260 Hz formula for wavelength v=wavelength*f..=meters formula for speed.returns to the camera example s=d/t, then you divide distance/2 formula for time t=d/s formula for distance. The part of a longitudinal wave where the particles of the medium are close together. The sound pressure decreases in inverse proportion to the distance, that is, with 1/r from the measuring point to the sound source, so that doubling of the distance decreases the sound pressure to a half (!) But some of the energy is also absorbed by objects, such as the eardrum in Figure 14.5, and some of the energy is converted to thermal energy in the air. Amplitude and Sound Drum produces sound due to vibration of its stretched membrane. "Loudness" is a human response to sound and is thus subjective and depends on the frequency of the sound as well as the absolute magnitude (sound pressure level or SPL) of the sound. 3)loudness this depends on the surface area of the vibrating body . Since sound is a compression wave, its loudness or amplitude would correspond to how much the wave is compressed. Loudness is measured in units called decibels decibel The amplitude of a sound wave decreases with distance from its source, because the energy of the wave is spread over a larger and larger area. Loudness of sound depends on its time period wavelength speed amplitude Loudness or intensity of sound is determined by its amplitude Difference of loudness, L 2 - L 1 = 10 log 10 (I 1 / I 0). If the speed of the sound wave is 340ms-1 and wavelength is 0.5m then the frequency is. The unit of sound is the decibel (dB). Read more: Intensity of Sound Intensity of Sound. The loudness of a sound depends directly on the amplitude of the vibrating body. Waves on a calm ocean may be less than 1 foot high. C Amplitude. The loudness of a sound wave is determined from its amplitude. A Frequency. While loudness is only associated with sound waves, all types of waves have an amplitude. Besides the pitch of a musical note, perhaps the most noticeable feature in how loud the note is. Transcribed image text: Part A- Variation in the speed of sound Sound is a longitudinal wave, and its speed depends on the medium through which it propagates. The pitch in fact, is a subjective sensation in the ear depending only upon the frequency of the musical note. 1)loudness is proportional to the square of the amplitude . It depends on the amount of energy that started the waves. The speed at which sound waves travel depends on the . Intensity of sound depends on amplitude. Q. Video Solution. Bigger/ amplified vibrations result in bigger/louder sounds. 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