Description : The bats can fly in the dark because (1) they can see the objects in darkness (2) they have weak legs and are likely to be attacked by predators (3) they generate flashes of light (4) they generate ultrasonic sound waves
Last Answer : they generate ultrasonic sound waves
Description : The bats can fly in the dark because – (1) They can see the objects in darkness (2) They have weak legs and are likely to be attacked by predators (3) They generate flashes of light (4) They generate ultrasonic sound waves
Last Answer : (3) They generate flashes of light
Description : Bats can also fly in dark because they are capable of taking the help of _____ A. Ultraviolet Waves B. Ultrasonic Waves C. Electromagnetic Waves D. Special Retina
Last Answer : ANSWER: B
Description : Bats can also fly in dark because they are capable of taking the help of -----? A. Ultraviolet Waves B. Ultrasonic Waves (Answer) C. Electromagnetic Waves D. Special Retina
Last Answer : B. Ultrasonic Waves (Answer)
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.
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 : ultrasonic sound waves
Description : The bats can fly in the dark because (a) They have a better vision in the dark (b) The light startles them (c) They produce ultrasonics (d) None of the above
Last Answer : Ans:(c)
Description : What is it called when bats, whales, and dolphins emit sound waves and interpret the reflect sound waves as a means to locate objects?
Last Answer : Sonar is a system that locates objects by transmitting sound waves and detecting the waves when they are reflected off of objects. Bats and many other animals, such as whales and dolphins, use natural sonar to navigate and capture
Description : Explain how bats use ultrasonic waves to catch prey. -Science
Last Answer : Bats catch insects with the help of an advanced navigation system known as echolocation. They are known to emit high-frequency ultrasonic waves pitched at 20-100KHz. This is too high for the natural ... . These sounds get reflected when it hits different objects and reverts to the bats as echoes.
Description : Bats detect the obstacles in their path by receiving the reflected ______. a) infrasonic waves c) ultrasonic waves b) electromagnetic waves d)radio waves
Last Answer : c) ultrasonic waves
Description : Which phenomenon do bats or dolphins use to find prey, predators or obstacles? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location
Last Answer : (4) Echo location Explanation: Echolocation, also called biosonar, is the biological sonar used by several kinds of animals. Echolocating animals emit calls out to the environment and ... swiftlets in the genus Aerodramus (formerly Collocalia) and the unrelated Of bird Steatornis caripensis.
Description : Which phenomenon do bats or dolphins use to find prey, predators or obstacles ? (1) Refraction of sound (2) Formation of beats (3) Scattering of sound (4) Echo location
Last Answer : Echo location
Description : Bats can fly in the dark because -General Knowledge
Last Answer : Bats can fly in dark because they. Bat echolocation is very much similar to a SONAR and is a perceptual system where ultrasonic sounds are emitted specifically to produce echoes.
Description : The waves used in sonography are – (1) Micro waves (2) Infra-red waves (3) Sound waves (4) Ultrasonic waves
Last Answer : (4) Ultrasonic waves Explanation: Sonography is an ultrasoundbased diagnostic imaging technique used for visualizing internal body structures including tendons, muscles, joints, vessels and internal organs for possible pathology or lesions.
Description : The waves used in sonography are (1) Micro waves (2) Infra-red waves (3) Sound waves (4) Ultrasonic waves
Last Answer : Ultrasonic waves
Description : Which of the following waves are diffracted by an obstacle of size 1 cm? (a) Light waves (b) Sound waves (c) Ultrasonic waves (d) X-rays
Description : Which technique is used by bats to fly in the dark?
Last Answer : Answer: Echolocation
Description : I fly, yet I have no wings. I cry, yet I have no eyes. Darkness follows me; lower light I never see.What am I? -Riddles
Last Answer : A cloud.
Description : Can sound waves generate heat? -Physics
Last Answer : Yes, sound waves can generate heat. In fact, sound waves almost always generate a little bit of heat as they travel and almost always end up as heat when they are absorbed. Sound and heat are both ... Yelling at your soup does indeed warm it up, but the amount is far too small to be noticeable.
Description : What is a neutron star which a Emits radiation that reaches the earth as radio waves and flashes of visible light?
Last Answer : pulsar
Description : In interference experiment, monochromatic light is replaced by white light, we will see (a) Uniform illumination of screen (b) Uniform darkness on the screen (c) Equally spaced dark and white bands (d) Few colored bands and then general illumination
Last Answer : (d) Few colored bands and then general illumination
Description : The owl can see most clearly in total darkness because – (1) it has squint eyes (2) it has large eyes with orbs directed forward, giving it binocular sight (3) it has light bulbs in its eyes provided by nature (4) it produces infrasonic sounds
Last Answer : (2) it has large eyes with orbs directed forward, giving it binocular sight Explanation: Because of their eyes, an owl can see much better in the dark than we can. Owls have very large eyes which ... are able to see their prey in a three-dimensional manner. However, an owl's eye cannot rotate.
Description : The owl can see most clearly in total darkness because (1) it has squint eyes (2) it has large eyes with orbs directed forward, giving it binocular sight (3) it has light bulbs in its eyes provided by nature (4) it produces infrasonic sounds
Last Answer : it has large eyes with orbs directed forward, giving it binocular sight
Description : Ultrasonic waves are those sound waves having frequency
Last Answer : More than 20 kilohertz
Description : For ultrasonic testing, which of the following statements is true? a) It is easy to identify all defects b) The equipment shall be calibrated before use c) The equipment cannot be automated d) Sound waves will not travel through copper
Last Answer : b) The equipment shall be calibrated before use
Description : Fifth Generation Computers are (1) Data Processors (2) Knowledge Processors (3) Sound waves (4) Ultrasonic waves
Last Answer : Knowledge Processors
Description : No legs or two legs, four legs or more, the color of green, on Terra it stays. Teeming with chemicals of darkness and light, needing only a wind, a breath to lift the kite. What is it? -Riddles
Last Answer : Life.
Description : Ultrasonic waves are produced by making use of - (1) ferro magnetic material (2) ferri magnetic material (3) piezo electric material (4) pyro electrical material
Last Answer : (3) piezo electric material Explanation: In most applications, ultrasonic waves are generated by a transducer that includes a piezoelectric material (crystal) that converts electrical energy (electric current) to mechanical energy (sound waves).
Description : Which of the following waves cannot be polarized? (1) Radio (2) Ultra violet (3) Infrared (4) Ultrasonic
Last Answer : (4) Ultrasonic Explanation: Only transverse waves (such as radio, ultraviolet and infrared waves) can be polarized since their vibrations can potentially occur in all directions perpendicular to the direction of travel. It is therefore possible to confine the vibrations to a single plane.
Description : Which of the following waves cannot be polarised? (1) Radio (2) Ultra violet (3) Infrared (4) Ultrasonic
Last Answer : Ultrasonic
Description : Radar is used for (a) Detecting objects by using light waves (b) Reflecting sound waves to detect objects (c) Determining the presence and location of objects with radio waves (d) Tracking rain-bearing clouds
Last Answer : Ans:(b)
Description : I scream out in the dark, I bring light to you, my flame whispers in the darkness. What am I? -Riddles
Last Answer : A candle.
Description : In interference experiment, by keeping all other parameters constant, if you see the thin film interference from different angles, you will observe (a)Uniform illumination of screen (b) Uniform ... c) Equally spaced dark and white bands (d) Few colored bands and then general illumination
Description : Sound waves transmitted from a source are sometimes weak when they reach the detector. What instrument is needed to boost the weak signal?
Last Answer : An amplifier.
Description : Which brief statement most accurately describes why alkenes react the way they do? (a) C=C double bonds are weak. (b) A π bond is lost but a stronger σ bond is gained. (c) C=C double bonds are unstable. (d) C=C π bonds are attacked by nucleophiles.
Last Answer : A π bond is lost but a stronger σ bond is gained.
Description : Sound of frequency below 20 Hz is called ______. (1) audio sounds (2) infrasonic (3) ultrasonic (4) supersonics
Last Answer : (2) infrasonic Explanation: The term "infrasonic" applied to sound refers to sound waves below the frequencies of audible sound and nominally includes anything under 20 Hz.
Description : Which one of the following animals can hear ultrasonic sound? (1) Rat (2) Squirrel (3) Cat (4) Bat
Last Answer : (4) Bat Explanation: Ultrasound is a cyclic sound pressure wave with a frequency greater than the upper limit of the human hearing range. Ultrasound is thus not separated from "normal" (audible) sound based on differences in physical properties, only the fact that humans cannot hear it.
Description : The sound produced by a bat is – (1) audible (2) subsonic (3) infrasonic (4) ultrasonic
Last Answer : (4) ultrasonic Explanation: Although bats use echolocation to detect their prey, and find their way around in the dark, the sounds which they emit are 'ultrasonic', which is another way of ... (audible) sound based on differences in physical properties, only the fact that humans cannot hear it.
Description : The sound produced by a bat is– (1) audible (2) subsonic (3) infrasonic (4) ultrasonic
Last Answer : ultrasonic
Description : Which one of the following animals can hear ultrasonic sound ? (1) Rat (2) Squirrel (3) Cat (4) Bat
Last Answer : Bat
Description : Answer the following S. No Statement Chose the correct answer OR Fill-in-the-blanks 1 Fyrite measures CO2, O2 and SO2 True/False 2 Ultrasonic Flow Meter uses the principle of____& ____ Fill in the ... of RPM meter is used and for a visible shaft-end _______ type of RPM meter is used.
Last Answer : Sr No Statement Chose the correct answer OR Fill-in-the-blanks Solution 1 Fyrite measures CO2, O2 and SO2 True/False False 2 Ultrasonic Flow Meter uses the principle of____& ____ ... ] 10 In a gasification system the reduction zone is above the combustion zone True/False False
Description : Do bats fly during the day?
Last Answer : No, they are nocturnal.
Description : I can fly but I have no wings. I can cry but I have no eyes. Wherever I go darkness follows me. What am I? -Riddles
Last Answer : Cloud.
Description : I can fly but I have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?
Last Answer : Cloud
Description : Remote sensing techniques make use of the properties of ___________ emitted, reflected or diffracted by the sensed objects: (A) Electric waves (B) Sound waves (C) Electromagnetic waves (D) Wind waves
Last Answer : Answer: Option C
Description : What is the technique of detecting the position of objects by producing very high frequency sound waves and listening to the echos?
Last Answer : ANSWER: SONAR
Description : “Sound waves can be used to make objects levitate.”
Last Answer : Levitation of objects using sound has been around for a few years. If you've ever stood in front of a large speaker you'll know that they can pump out what feels like quite a ... air corresponding the wavelength of the sound wave. To levitate something just requires creating a standing wave.
Description : What is the frequency of ultrasonic waves? -General Knowledge
Last Answer : Ultrasonic wave is defined as “inaudible sound with high frequency for human” the frequency of which generally exceeds 20 kHz. These days, sound wave which is not intended to be heard is also called ultrasonic wave.