A supersonic plane flies at the speed (a) Less than the speed of the sound (b) Of sound (c) Greater than the speed of the sound (d) Of light

A supersonic plane flies at the speed (a) Less than the speed of the sound (b) Of sound (c) Greater than the speed of the sound (d) Of light
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Supersonic plane fly with the speed - (1) less than the speed of sound (2) of sound (3) greater than the speed of sound (4) of light

Description : Supersonic plane fly with the speed - (1) less than the speed of sound (2) of sound (3) greater than the speed of sound (4) of light

Last Answer : (3) greater than the speed of sound Explanation: The regimes of flight are subsonic, transonic, supersonic and hypersonic. Vehicles that fly at supersonic speeds are flying faster than the speed of sound. The speed of sound is about 768 miles per hour (1,236 kilometers per hour) at sea level.

Supersonic plane fly with the speed - (1) less than the speed of sound (2) of sound (3) greater than the speed of sound (4) of light

Description : Supersonic plane fly with the speed - (1) less than the speed of sound (2) of sound (3) greater than the speed of sound (4) of light

Last Answer : (3) greater than the speed of sound Explanation: Supersonic travel is a rate of travel of an object that exceeds the speed of sound (Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) ... this speed is approximately 344 m/s, 1,125 ft/s, 768 mph, 667 knots, or 1,235 km/h.

Can you make a shock wave of light by breaking the light barrier just like supersonic airplanes break the sound barrier? -Physics

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Supersonic air plane creates a shock wave called

Description : Supersonic air plane creates a shock wave called

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Last Answer : (2) ultrasonic sound waves Explanation: The reason that bats use ultrasound is because it has such a high frequency and it has a low diffraction or it bends less. They use this sound to do a ... come faster in a particular area than the rest of the sounds then they know that something is near.

Bats can sense obstacles because they produce – (1) supersonic sound waves (2) ultrasonic sound waves (3) infrasonic sound waves (4) micro sound waves

Description : Bats can sense obstacles because they produce – (1) supersonic sound waves (2) ultrasonic sound waves (3) infrasonic sound waves (4) micro sound waves

Last Answer : (2) ultrasonic sound waves Explanation: The reason that bats use ultrasound is because it has such a high frequency and it has a low diffraction or it bends less. They use this sound to do a ... come faster in a particular area than the rest of the sounds then they know that something is near.

What is the high frequency sound that cannot be heard by the human ear? A. Ultrasonic B. Transonic C. Subsonic D. Supersonic

Description : What is the high frequency sound that cannot be heard by the human ear? A. Ultrasonic B. Transonic C. Subsonic D. Supersonic

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Bats can sense obstacles because they produce (1) supersonic sound waves (2) ultrasonic sound waves (3) infrasonic sound waves (4) micro sound waves

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The noise from an airplane engine 100 ft from an observer is found to have an intensity of 45dB. What will be the intensity when the plane flies overhead at an altitude of 1 mi? A. 10.5 dB B. 34.5 dB C. 35 dB D. 20.5 dB

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The velocity of heat radiation in vacuum is – (1) Equal to that of light (2) Less than that of light (3) Greater than that of light (4) Equal to that of sound

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The velocity of heat radiation in vacuum is (1) Equal to that of light (2) Less than that of light (3) Greater than that of light (4) Equal to that of sound

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Last Answer : Equal to that of light

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The vapour pressure over the concave surface is (A) Less man the vapour pressure over the plane surface (B) Equal to the vapour pressure over the plane surface (C) Greater than the vapour pressure over the plane surface (D) Zero

Description : The vapour pressure over the concave surface is (A) Less man the vapour pressure over the plane surface (B) Equal to the vapour pressure over the plane surface (C) Greater than the vapour pressure over the plane surface (D) Zero

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Indian and Russian scientists successfully test-fired a supersonic cruise missile named (1) GSAT – 1 (2) GSLV (3) Brahmos (4) INSAT –3B

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Description : How does a supersonic electric jet airplane work?

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Is gravity really enough to pull a person to supersonic velocity?

Description : Is gravity really enough to pull a person to supersonic velocity?

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How well do plug-in supersonic devices work to repel spiders?

Description : How well do plug-in supersonic devices work to repel spiders?

Last Answer : Source: http://www.pestproducts.com/spider.htm Spider Elimination Kit Treat the perimeter of the building with a professional residual pesticide such as Cynoff WP WSB, Demon WP or Suspend SC at maximum strength. ... power dusting with Delta Dust would be best. I've never used these - just google'd.

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Description : Who is the creator of Supersonic Concord ?

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A supersonic jet produces sonic boom in a

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A supersonic jet produces sonic boom in a

Description : A supersonic jet produces sonic boom in a

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Why have we been able to build supersonic aircrafts but not supersonic ships?

Description : Why have we been able to build supersonic aircrafts but not supersonic ships?

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If an engineer is designing a building in an area that has an occasional supersonic flight pass over it the engineer should apex?

Description : If an engineer is designing a building in an area that has an occasional supersonic flight pass over it the engineer should apex?

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Supersonic aircraft fly with the speed_____.

Description : Supersonic aircraft fly with the speed_____.

Last Answer : Greater than the speed of sound

Supersonic jet causes pollution by thinning of - (1) O3 layer (2) O2 layer (3) SO2 layer (4) CO2 layer

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Why an increase in area is required to produce an increase of velocity in case of supersonic flow ?

Description : Why an increase in area is required to produce an increase of velocity in case of supersonic flow ?

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The supersonic jets cause pollution by the thinning of (a) O2 layer (b) O3 layer (c) CO2 layer (d) SO2 layer.

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In case of supersonic flow of a fluid through pipeline, the 'Mach number' is (A) 0 (B) 1 (C) < 1 (D) > 1

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Supersonic jet causes pollution by thinning of (1) O3 layer (2) O2 layer (3) SO2 layer (4) CO2 layer

Description : Supersonic jet causes pollution by thinning of (1) O3 layer (2) O2 layer (3) SO2 layer (4) CO2 layer

Last Answer : O3 layer

Speed of sound is greater in solids than in liquids?

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Why, even thoough they have an open circulatory system, can flying insects like flies beat their wings with great speed?

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If kids in the US start dropping dead like flies due to a Covid19 variant, would there be less anti-mask and anti-vaccine efforts?

Description : If kids in the US start dropping dead like flies due to a Covid19 variant, would there be less anti-mask and anti-vaccine efforts?

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The starting current of an electric motor is ________ the current flowing after the motor reaches its normal running speed. (a) nearly equal to (b) exactly equal to (c) less than (d) much greater than

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Last Answer : Ans:(d)

They say the universe is 14 billion years old and is expanding at the speed of light, so the maximum distance from one point to another cannot be greater than 28 billion light years. Is this true?

Description : They say the universe is 14 billion years old and is expanding at the speed of light, so the maximum distance from one point to another cannot be greater than 28 billion light years. Is this true?

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The plywood (A) Has good strength along the panel only (B) Can be spilt in the plane of the panel (C) Has greater impact resistance to blows than ordinary wood (D) Cannot be bent more easily than ordinary wood of same thickness

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When microwave energy is passed through a piece of ferrite in a magnetic field, another effect occurs. If the frequency of the microwave energy is much greater than the electron wobble frequency, the plane of polarization of the wavefront is rotated. This is known as

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Last Answer : Faraday Rotation Effect

Scattering losses are caused by the interaction of light with density fluctuations within a fiber. What are the two scattering mechanisms called when the size of the density fluctuations is (a) greater than and (b) less than one-tenth of the operating wavelength?

Description : Scattering losses are caused by the interaction of light with density fluctuations within a fiber. What are the two scattering mechanisms called when the size of the density fluctuations is (a) greater than and (b) less than one-tenth of the operating wavelength?

Last Answer : . (a) Mie scattering; (b) Rayleigh scattering.

Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? ∙ A. less than ∙ B. greater than ∙ C. equal to ∙ D. zero

Description : Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? ∙ A. less than ∙ B. greater than ∙ C. equal to ∙ D. zero

Last Answer : ∙ B. greater than

Light enters air from water. The angle of refraction will be A. Greater than the angle of incidence. B. Equal to the angle of incidence. C. Less than the angle of incidence. D. None of these

Description : Light enters air from water. The angle of refraction will be A. Greater than the angle of incidence. B. Equal to the angle of incidence. C. Less than the angle of incidence. D. None of these

Last Answer : C. Less than the angle of incidence.

To find prominent diffraction , the size of diffraction object should be A. greater than wavelength of light used B. comparable to order of wavelength of light C. less than wavelength of light used D. none of these.

Description : To find prominent diffraction , the size of diffraction object should be A. greater than wavelength of light used B. comparable to order of wavelength of light C. less than wavelength of light used D. none of these.

Last Answer : B. comparable to order of wavelength of light

Optical fiber uses reflection to guide light through a channel, in which angle of incidence is ................. the critical angle. (A) equal to (B) less than (C) greater than (D) less than or equal to

Description : Optical fiber uses reflection to guide light through a channel, in which angle of incidence is ................. the critical angle. (A) equal to (B) less than (C) greater than (D) less than or equal to

Last Answer : (C) greater than

The effect of a large magnitude of the numerical aperture ∙ A. The amount of external light the fiber will accept is greater. ∙ B. The amount of external light the fiber will accept is less. ∙ C. The amount of modal dispersion will be less. ∙ D. The amount of chromatic dispersion will be greater.

Description : The effect of a large magnitude of the numerical aperture ∙ A. The amount of external light the fiber will accept is greater. ∙ B. The amount of external light the fiber will accept is less. ... The amount of modal dispersion will be less. ∙ D. The amount of chromatic dispersion will be greater.

Last Answer : The amount of external light the fiber will accept is greater.

A major difference between light cured and chemical cured composite is that during setting or in function the light cured material tends to:******** VERY IMP A. Seal the margins better and completely B. Exhibit less wear on time C. Undergo greater colour change D. Shrink more rapidly E. Posses greater fracture toughness

Description : A major difference between light cured and chemical cured composite is that during setting or in function the light cured material tends to:******** VERY IMP A. Seal the margins better and ... on time C. Undergo greater colour change D. Shrink more rapidly E. Posses greater fracture toughness

Last Answer : D. Shrink more rapidly

Light waves are different from sound waves in that 1. Light waves are electromagnetic but sound waves are not 2. Light waves can travel through water but sound waves cannot 3. Light travels with the same speed in all media 4. Light waves produce interference but sound waves do not 5. Light can travel through vacuum but sound cannot Which of the above statements is/are correct? (a) 1 and 5 (b) 2 and 3 (c) 3 and 4 (d) 1 and 4

Description : Light waves are different from sound waves in that 1. Light waves are electromagnetic but sound waves are not 2. Light waves can travel through water but sound waves cannot 3. Light travels with the same speed in all media 4. Light ... /are correct? (a) 1 and 5 (b) 2 and 3 (c) 3 and 4 (d) 1 and 4

Last Answer : Ans:(a)

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

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

Last Answer : (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.

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.

Mach number is the ratio of the speed of the (A) Fluid to that of the light (B) Light to that of the fluid (C) Fluid to that of the sound (D) Sound to that of the fluid

Description : Mach number is the ratio of the speed of the (A) Fluid to that of the light (B) Light to that of the fluid (C) Fluid to that of the sound (D) Sound to that of the fluid

Last Answer : (C) Fluid to that of the sound

In annihilation of matter the photons produced fly off at the speed of a) Light b) Sound c) Twice the speed of light d) None

Description : In annihilation of matter the photons produced fly off at the speed of a) Light b) Sound c) Twice the speed of light d) None

Last Answer : a) Light

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