Decibel is the unit of ______. (1) Speed of light (2) Intensity of sound (3) Intensity of heat (4) None of these

Decibel is the unit of ______. (1) Speed of light (2) Intensity of sound (3) Intensity of heat (4) None of these
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(2) Intensity of sound Explanation: Decibel (dB) unit is used for expressing the ratio between two amounts of electric or acoustic power for measuring the relative loudness of sounds.
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Decibel is the unit used for – (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency

Description : Decibel is the unit used for – (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency

Last Answer : (3) Intensity of sound Explanation: The decibel (abbreviated dB) is the unit used to measure the intensity of a sound. The decibel scale is a little odd because the human ear is incredibly ... of a physical quantity (usually power or intensity) relative to a specified or implied reference level.

Decibel is the unit used for (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency

Description : Decibel is the unit used for (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency

Last Answer : Intensity of sound

Decibel is used to measure the intensity of - (1) Magnetic field (2) Sound (3) Light (4) Heat

Description : Decibel is used to measure the intensity of - (1) Magnetic field (2) Sound (3) Light (4) Heat

Last Answer : (2) Sound Explanation: The decibel (dB) is used to measure sound level, but it is also widely used in electronics, signals and communication.

Which of the following is the unit of perceived loudness of sound? (1) Decibel (2) Sone (3) Hertz (4) Phon

Description : Which of the following is the unit of perceived loudness of sound? (1) Decibel (2) Sone (3) Hertz (4) Phon

Last Answer : (2) Sone Explanation: Loudness is a subjective characteristic of a sound (as opposed to the sound-pressure level in decibels, which is objective and directly measurable). Perceived loudness of sound ... on sound pressure level, the frequency spectrum, and the time behavior of the sound in question.

Which of the following is the unit of perceived loudness of sound ? (1) Decibel (2) Sone (3) Hertz (4) Phon

Description : Which of the following is the unit of perceived loudness of sound ? (1) Decibel (2) Sone (3) Hertz (4) Phon

Last Answer : Sone

Dioptere is the unit of – (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity

Description : Dioptere is the unit of – (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity

Last Answer : (1) power of a lens

Dioptere is the unit of (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity

Description : Dioptere is the unit of (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity

Last Answer : power of a lens

Which term is not associated with sound wave? (1) Hertz (2) Decibel (3) Candela (4) Mach

Description : Which term is not associated with sound wave? (1) Hertz (2) Decibel (3) Candela (4) Mach

Last Answer : (3) Candela Explanation: Candela is the standard unit of luminous intensity, the luminous power per unit solid angle emitted by a point light source in a particular direction, in the International System of Units. The word candela means candle in Latin.

The ordinary and maximum tolerance limit of sound by human being is – (1) 50 db to 70 db (decibel) (2) 60 db to 80 db (decibel) (3) 65 db to 75 db (decibel) (4) 70 db to 85 db (decibel)

Description : The ordinary and maximum tolerance limit of sound by human being is – (1) 50 db to 70 db (decibel) (2) 60 db to 80 db (decibel) (3) 65 db to 75 db (decibel) (4) 70 db to 85 db (decibel)

Last Answer : (2) 60 db to 80 db (decibel) Explanation: Normal speech is about 60 dB (decibels). A dangerous sound is anything that is 80 dB or higher which can lead to hearing loss. At 70 dB or ... the risk of harm to healthy ears is negligible. Listening to sound above 80 decibels can cause profound deafness.

Decibel is a term connected with : (1) air (2) water (3) sound (4) soil

Description : Decibel is a term connected with : (1) air (2) water (3) sound (4) soil

Last Answer : (3) sound Explanation: The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity (usually power or intensity) relative to a specified or implied reference level. A ratio in, decibels is ten times the logarithm to base 10 of the ratio of two power quantities.

A decibel is – (1) A musical instrument (2) The wavelength of noise (3) A musical note (4) A measure of sound level

Description : A decibel is – (1) A musical instrument (2) The wavelength of noise (3) A musical note (4) A measure of sound level

Last Answer : (4) A measure of sound level Explanation: The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity (usually power or intensity) relative to a specified or implied reference ... ratio in decibels is ten times the logarithm to base 10 of the ratio of two power quantities.

How many times more intense is an 80 decibel sound than a 40 decibel sound? w) 2 x) 40 y) 1000 z) 10,000

Description : How many times more intense is an 80 decibel sound than a 40 decibel sound? w) 2 x) 40 y) 1000 z) 10,000

Last Answer : ANSWER: Z -- 10,000

Which term is not associated with sound wave? (1) Hertz (2) Decibel (3) Candela (4) Mach

Description : Which term is not associated with sound wave? (1) Hertz (2) Decibel (3) Candela (4) Mach

Last Answer : Candela

The ordinary and maximum tolerance limit of sound by human being is (1) 50 db to 70 db (decibel) (2) 60 db to 80 db (decibel) (3) 65 db to 75 db (decibel) (4) 70 db to 85 db (decibel)

Description : The ordinary and maximum tolerance limit of sound by human being is (1) 50 db to 70 db (decibel) (2) 60 db to 80 db (decibel) (3) 65 db to 75 db (decibel) (4) 70 db to 85 db (decibel)

Last Answer : 60 db to 80 db (decibel)

Decibel is a term connected with : (1) air (2) water (3) sound (4) soil

Description : Decibel is a term connected with : (1) air (2) water (3) sound (4) soil

Last Answer : sound

A decibel is (1) a musical instrument (2) the wavelength of noise (3) a musical note (4) a measure of sound level

Description : A decibel is (1) a musical instrument (2) the wavelength of noise (3) a musical note (4) a measure of sound level

Last Answer : a measure of sound level

A light year is a unit of – (1) time (2) distance (3) speed of light (4) intensity of light

Description : A light year is a unit of – (1) time (2) distance (3) speed of light (4) intensity of light

Last Answer : (2) distance Explanation: As defined by the International. Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year. It is a measure of distance (rather than, as is sometimes misunderstood, a measure of time).

When we hear a sound, we can identify its source from ______. (1) wave length of sound (2) the overtones present in the sound (3) the intensity of sound (4) the amplitude of sound

Description : When we hear a sound, we can identify its source from ______. (1) wave length of sound (2) the overtones present in the sound (3) the intensity of sound (4) the amplitude of sound

Last Answer : (2) the overtones present in the sound Explanation: An overtone is any frequency higher than the fundamental frequency of a sound. Using the model of Fourier analysis, the fundamental and the overtones together are called partials.

The unit of noise pollution (level) is – (1) decibel (2) decimal (3) ppm (4) None of these

Description : The unit of noise pollution (level) is – (1) decibel (2) decimal (3) ppm (4) None of these

Last Answer : (1) decibel Explanation: Noise pollution refers to any unpleasant, damaging or irritating noise that has the potential to harm people, wildlife or the environment. The decibel (dB) is the main unit used ... can also be measured. by its pitch, which is the frequency of sound vibrations per second.

The unit of measurement of noise is – (1) Decibel (2) Hertz (3) Amplifier (4) Acoustics

Description : The unit of measurement of noise is – (1) Decibel (2) Hertz (3) Amplifier (4) Acoustics

Last Answer : (1) Decibel Explanation: The decibel (dB) is the unit used to measure the intensity of sound or noise level. It is given in terms of a logarithmic function of a ratio of power intensities. One ... one bel, named in honor of Alexander Graham Bell who was the inventor of the telephone and phonograph.

The unit of measurement of noise is (1) Decibel (2) Hertz (3) Amplifier (4) Acoustics

Description : The unit of measurement of noise is (1) Decibel (2) Hertz (3) Amplifier (4) Acoustics

Last Answer : Decibel

The unit of noise pollution (level) is : (1) decibel (2) decimal (3) ppm (4) None of these

Description : The unit of noise pollution (level) is : (1) decibel (2) decimal (3) ppm (4) None of these 

Last Answer : decibel

SI unit of luminous intensity is ______. (1) lumen (2) lux (3) candela (4) watt

Description : SI unit of luminous intensity is ______. (1) lumen (2) lux (3) candela (4) watt

Last Answer : (3) candela Explanation: Luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a ... the sensitivity of the human eye. The SI unit of luminous intensity is the candela (cd).

The modern unit of intensity of light is ______.

Description : The modern unit of intensity of light is ______.

Last Answer : The modern unit of intensity of light is ______. A. lumen B. candle power C. lux D. All the above.

What is the unit of intensity of sound in Si method ?

Description : What is the unit of intensity of sound in Si method ?

Last Answer : The unit of sound intensity in the Si method is Wm ^ -2

Sound energy passing per second through a unit area held perpendicular is called - (1) Intensity (2) Frequency (3) Amplitude (4) Quality

Description : Sound energy passing per second through a unit area held perpendicular is called - (1) Intensity (2) Frequency (3) Amplitude (4) Quality

Last Answer : (1) Intensity Explanation: Sound energy passes through a unit area held perpendicular to the direction of propagation of sound waves is called intensity of sound.

At what decibel level can sound hurt your ears?

Description : At what decibel level can sound hurt your ears?

Last Answer : answer:[snip from wikipedia article on Sound] Humans can generally hear sounds with frequencies between 20 Hz and 20 kHz (the audio range) although this range varies significantly with age, occupational hearing damage, and ... . or at least that's what if feels like to me ... hope this helps ^_^

The weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel. (A) 1 (B) 5 (C) 10 (D) 50

Description : The weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel. (A) 1 (B) 5 (C) 10 (D) 50

Last Answer : A) 1

Watt is a unit of - (1) Time (2) Power (3) Light (4) intensity of light

Description : Watt is a unit of - (1) Time (2) Power (3) Light (4) intensity of light

Last Answer : (2) Power

Light year is a unit of - (1) time (2) distance (3) light (4) intensity of light

Description : Light year is a unit of - (1) time (2) distance (3) light (4) intensity of light

Last Answer : (2) distance Explanation: A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second.

The energy associated with one photon of a light beam is proportional to one of the following. Is it proportional to: w) the intensity of the light source from which it came x) the number of photons in the beam y) the frequency of the photon z) the speed of the photon

Description : The energy associated with one photon of a light beam is proportional to one of the following. Is it proportional to: w) the intensity of the light source from which it came x) the number of photons in the beam y) the frequency of the photon z) the speed of the photon

Last Answer : ANSWER: Y -- THE FREQUENCY OF THE PHOTON

Decibel is the unit of….

Description : Decibel is the unit of….

Last Answer : Sound

The use of Decibel unit is ……

Description : The use of Decibel unit is ……

Last Answer : Intensity of sound

The unit of pitch A. Decibel B. Phon C. Mel D. Sone

Description : The unit of pitch A. Decibel B. Phon C. Mel D. Sone

Last Answer : C. Mel

What is decibel scale ?

Description : What is decibel scale ?

Last Answer : The scale by which the smallest change in human audible sound is measured is called the decibel scale. According to this scale, a word of 20 decibels is 10 times more intense than a word of 10 decibels and a word of 30 decibels is 100 times more intense.

Noise is measured in – (1) Watt (2) REM (3) Centigrade (4) Decibel

Description : Noise is measured in – (1) Watt (2) REM (3) Centigrade (4) Decibel

Last Answer : (4) Decibel Explanation: The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity (usually power or intensity) relative to a specified or implied reference level. A ratio in ... from their roosts in caves, attics, or trees at dusk and hunt for insects into the night.

Noise is measured in (1) Watt (2) REM (3) Centigrade(4) Decibel

Description : Noise is measured in (1) Watt (2) REM (3) Centigrade(4) Decibel

Last Answer : Decibel

What is the conventional unit of sound intensity ?

Description : What is the conventional unit of sound intensity ?

Last Answer : Conventional unit decibels of sound intensity.

The sound energy per unit area at right angles to the propagation direction per unit time. A. Sound intensity B. Loudness C. Coherence D. Sound stress

Description : The sound energy per unit area at right angles to the propagation direction per unit time. A. Sound intensity B. Loudness C. Coherence D. Sound stress

Last Answer : A. Sound intensity

Which is the unit of measuring intensity of sound?

Description : Which is the unit of measuring intensity of sound?

Last Answer : Decibels

What is the intensity of sound ?

Description : What is the intensity of sound ?

Last Answer : The amount of energy flowing per second through a single area perpendicular to the path of sound passing through a medium is called the intensity of sound . It is expressed by l .

Ondometer is a - (1) Measuring instrument for distance covered by motor wheels (2) Measuring instrument for frequency of electromagnetic waves (3) Device for measuring sound intensity (4) Measuring instrument for electric power

Description : Ondometer is a - (1) Measuring instrument for distance covered by motor wheels (2) Measuring instrument for frequency of electromagnetic waves (3) Device for measuring sound intensity (4) Measuring instrument for electric power

Last Answer : (2) Measuring instrument for frequency of electromagnetic waves

Intensity of sound has - (1) an object existence (2) a subject existence (3) no existence (4) both subjective and objective existence

Description : Intensity of sound has - (1) an object existence (2) a subject existence (3) no existence (4) both subjective and objective existence

Last Answer : (1) an object existence Explanation: Intensity of sound has an object existence. Sound intensity is defined as the sound power per unit area.

The pitch of the sound is measured by its: (1) Intensity (2) waveform (3) Frequency (4) Loudness

Description : The pitch of the sound is measured by its: (1) Intensity (2) waveform (3) Frequency (4) Loudness

Last Answer : (3) Frequency Explanation: Pitch relates to the frequency, or how many times a second the particles vibrate. The distance between one wave and the next gives the wavelength. For sounds all travelling at the same speed, highfrequency (high-pitched) sounds have waves very close together.

Which of the following property of sound is affected by change in air temperature – (1) Frequency (2) Intensity (3) Amplitude (4) Wavelength

Description : Which of the following property of sound is affected by change in air temperature – (1) Frequency (2) Intensity (3) Amplitude (4) Wavelength

Last Answer : (4) Wavelength Explanation: The wavelength of sound changes with temperature. This is because the speed of sound changes with the temperature. Since the speed of sound is different at different temperature, this ... while the same tone in fresh water at 68°F would have a wavelength of 48.05 feet.

The pitch of sound depends on its – (1) Frequency (2) Intensity (3) Velocity (4) Amplitude

Description : The pitch of sound depends on its – (1) Frequency (2) Intensity (3) Velocity (4) Amplitude

Last Answer : (1) Frequency Explanation: Pitch is a perceptual property that allows the ordering of sounds on a frequencyrelated scale. Pitch may be quantified as a frequency, but pitch is not a purely objective physical property; it is a subjective psychoacoustical attribute of sound.

Loudness of sound varies directly with vibrating body’s – (1) Intensity (2) Amplitude (3) Pitch (4) Quality

Description : Loudness of sound varies directly with vibrating body’s – (1) Intensity (2) Amplitude (3) Pitch (4) Quality

Last Answer : (2) Amplitude Explanation: Loudness of Sound: Loudness of sound depends on amplitude of vibration. Loudness of sound is directly proportional to square of amplitude of vibration.

Two sources of sound placed close to each other, are emitting progressive waves given by y1 = 4 sin 600 t and y2 = 5 sin 608 t. An observer located near these two sources of sound will hear: (1) 4 beats per second with intensity ratio 81 : 1 between waxing and waning (2) 4 beats per second with intensity ratio 25 : 16 between waxing and waning (3) 8 beats per second with intensity ratio 25 : 16 between waxing and waning (4) 8 beats per second with intensity ratio 81 : 1 between waxing and waning

Description : Two sources of sound placed close to each other, are emitting progressive waves given by y1 = 4 sin 600 t and y2 = 5 sin 608 t. An observer located near these two sources of sound will ... between waxing and waning (4) 8 beats per second with intensity ratio 81 : 1 between waxing and waning

Last Answer : (1) 4 beats per second with intensity ratio 81 : 1 between waxing and waning

Which of the following property of sound is affected by change in air temperature (1) Frequency (2) Intensity (3) Amplitude (4) Wavelength

Description : Which of the following property of sound is affected by change in air temperature (1) Frequency (2) Intensity (3) Amplitude (4) Wavelength

Last Answer : Wavelength

The pitch of sound depends on its (1) Frequency(2) Intensity (3) Velocity (4) Amplitude

Description : The pitch of sound depends on its (1) Frequency(2) Intensity (3) Velocity (4) Amplitude

Last Answer : Frequency