Sonography (Option [A]) is a biological method that utilizes ultrasonic sound waves. Also known as ultrasound imaging, it involves the use of high-frequency sound waves (typically above 20,000 Hz) to create real-time images of internal body structures. During a sonographic examination, a transducerRead more
Sonography (Option [A]) is a biological method that utilizes ultrasonic sound waves. Also known as ultrasound imaging, it involves the use of high-frequency sound waves (typically above 20,000 Hz) to create real-time images of internal body structures. During a sonographic examination, a transducer emits these sound waves into the body, where they bounce off tissues and organs, producing echoes. These echoes are then detected by the transducer and converted into an image displayed on a monitor.
Sonography is non-invasive, safe, and widely used in medical diagnostics to visualize organs such as the heart, liver, kidneys, and unborn fetuses. It helps in diagnosing conditions like pregnancy, tumors, cysts, and abnormalities in various organs. Unlike X-rays (Option [D]), which use ionizing radiation, sonography relies on harmless sound waves, making it suitable for repeated use without posing radiation risks. Therefore, among the options provided, sonography stands out as the biological method that harnesses ultrasonic sound waves for medical imaging purposes.
Night vision equipment primarily utilizes Infrared waves (Option [C]). Infrared (IR) waves have wavelengths longer than visible light but shorter than microwaves. These waves are emitted by objects due to their thermal energy and are detected by night vision devices. Unlike radio waves (used in commRead more
Night vision equipment primarily utilizes Infrared waves (Option [C]). Infrared (IR) waves have wavelengths longer than visible light but shorter than microwaves. These waves are emitted by objects due to their thermal energy and are detected by night vision devices. Unlike radio waves (used in communication), microwaves (used in radar and cooking), and visible light (used in human vision and photography), infrared waves are crucial for night vision because they enable detection of heat signatures emitted by objects, allowing these devices to create images in low-light or no-light conditions. This capability is essential for military operations, surveillance, navigation, and wildlife observation at night. Therefore, out of the options provided, infrared waves are specifically employed in night vision equipment to enhance visibility beyond the limitations of human vision in darkness.
The frequency or intensity of the whistle of an approaching train increases due to the Doppler Effect. This phenomenon describes how the perceived frequency of sound changes depending on the relative motion between the source (the train) and the observer. As the train moves towards the observer, eacRead more
The frequency or intensity of the whistle of an approaching train increases due to the Doppler Effect. This phenomenon describes how the perceived frequency of sound changes depending on the relative motion between the source (the train) and the observer. As the train moves towards the observer, each sound wave is emitted closer together, leading to a higher perceived frequency and intensity. Conversely, when the train moves away, the waves are stretched out, resulting in a lower perceived frequency and intensity. This effect is crucial for various applications, including radar systems, astronomy (studying celestial objects’ motion), and everyday scenarios like understanding approaching vehicles’ speeds based on their sound. Charles’s Law relates to the behavior of gases concerning temperature and volume, Archimedes’ Law to buoyancy, and the Big Bang Theory to the origin and evolution of the universe, none of which directly explain the observed phenomenon of increasing whistle frequency from an approaching train.
The Doppler effect is related to sound (Option A). It explains the change in frequency of waves, whether sound or electromagnetic, due to relative motion between the source emitting the waves and the observer. When a sound source moves towards an observer, the sound waves are compressed, resulting iRead more
The Doppler effect is related to sound (Option A). It explains the change in frequency of waves, whether sound or electromagnetic, due to relative motion between the source emitting the waves and the observer. When a sound source moves towards an observer, the sound waves are compressed, resulting in a higher frequency or pitch (called blue shift). Conversely, when the source moves away, the waves stretch, leading to a lower frequency or pitch (red shift). This phenomenon applies not only to sound waves but also to light waves and other types of waves. Understanding the Doppler effect is crucial in various fields, such as astronomy (to determine the motion of stars and galaxies), meteorology (to study weather patterns using Doppler radar), medicine (for Doppler ultrasound to measure blood flow), and in everyday applications like police radar for measuring vehicle speeds. It illustrates how motion affects wave properties and how these changes are perceived by observers, influencing our understanding of the universe and technological advancements.
The fluctuations in the frequency of a sound source are called the Doppler effect (Option B). The Doppler effect is a change in the frequency of a wave in relation to an observer who is moving relative to the wave source. This effect is most commonly experienced with sound waves. When a sound sourceRead more
The fluctuations in the frequency of a sound source are called the Doppler effect (Option B). The Doppler effect is a change in the frequency of a wave in relation to an observer who is moving relative to the wave source. This effect is most commonly experienced with sound waves. When a sound source moves toward an observer, the sound waves are compressed, resulting in a higher frequency or pitch (an effect called a blue shift). Conversely, when the sound source moves away from the observer, the sound waves are stretched, leading to a lower frequency or pitch (an effect called a red shift). This principle not only applies to sound waves but also to electromagnetic waves, such as light. The Doppler effect has practical applications in various fields, including astronomy, radar and sonar technology, medical imaging (Doppler ultrasound), and even in everyday phenomena like the changing pitch of a passing siren. Understanding this effect is essential in analyzing the motion and speed of objects relative to an observer.
A biological method in which ultrasonic sound is used?
Sonography (Option [A]) is a biological method that utilizes ultrasonic sound waves. Also known as ultrasound imaging, it involves the use of high-frequency sound waves (typically above 20,000 Hz) to create real-time images of internal body structures. During a sonographic examination, a transducerRead more
Sonography (Option [A]) is a biological method that utilizes ultrasonic sound waves. Also known as ultrasound imaging, it involves the use of high-frequency sound waves (typically above 20,000 Hz) to create real-time images of internal body structures. During a sonographic examination, a transducer emits these sound waves into the body, where they bounce off tissues and organs, producing echoes. These echoes are then detected by the transducer and converted into an image displayed on a monitor.
Sonography is non-invasive, safe, and widely used in medical diagnostics to visualize organs such as the heart, liver, kidneys, and unborn fetuses. It helps in diagnosing conditions like pregnancy, tumors, cysts, and abnormalities in various organs. Unlike X-rays (Option [D]), which use ionizing radiation, sonography relies on harmless sound waves, making it suitable for repeated use without posing radiation risks. Therefore, among the options provided, sonography stands out as the biological method that harnesses ultrasonic sound waves for medical imaging purposes.
See lessWhich one of the following types of waves is used in night vision equipment?
Night vision equipment primarily utilizes Infrared waves (Option [C]). Infrared (IR) waves have wavelengths longer than visible light but shorter than microwaves. These waves are emitted by objects due to their thermal energy and are detected by night vision devices. Unlike radio waves (used in commRead more
Night vision equipment primarily utilizes Infrared waves (Option [C]). Infrared (IR) waves have wavelengths longer than visible light but shorter than microwaves. These waves are emitted by objects due to their thermal energy and are detected by night vision devices. Unlike radio waves (used in communication), microwaves (used in radar and cooking), and visible light (used in human vision and photography), infrared waves are crucial for night vision because they enable detection of heat signatures emitted by objects, allowing these devices to create images in low-light or no-light conditions. This capability is essential for military operations, surveillance, navigation, and wildlife observation at night. Therefore, out of the options provided, infrared waves are specifically employed in night vision equipment to enhance visibility beyond the limitations of human vision in darkness.
See lessThe frequency or intensity of the whistle of an approaching train increase, due to which phenomenon?
The frequency or intensity of the whistle of an approaching train increases due to the Doppler Effect. This phenomenon describes how the perceived frequency of sound changes depending on the relative motion between the source (the train) and the observer. As the train moves towards the observer, eacRead more
The frequency or intensity of the whistle of an approaching train increases due to the Doppler Effect. This phenomenon describes how the perceived frequency of sound changes depending on the relative motion between the source (the train) and the observer. As the train moves towards the observer, each sound wave is emitted closer together, leading to a higher perceived frequency and intensity. Conversely, when the train moves away, the waves are stretched out, resulting in a lower perceived frequency and intensity. This effect is crucial for various applications, including radar systems, astronomy (studying celestial objects’ motion), and everyday scenarios like understanding approaching vehicles’ speeds based on their sound. Charles’s Law relates to the behavior of gases concerning temperature and volume, Archimedes’ Law to buoyancy, and the Big Bang Theory to the origin and evolution of the universe, none of which directly explain the observed phenomenon of increasing whistle frequency from an approaching train.
See lessDoppler effect is related to
The Doppler effect is related to sound (Option A). It explains the change in frequency of waves, whether sound or electromagnetic, due to relative motion between the source emitting the waves and the observer. When a sound source moves towards an observer, the sound waves are compressed, resulting iRead more
The Doppler effect is related to sound (Option A). It explains the change in frequency of waves, whether sound or electromagnetic, due to relative motion between the source emitting the waves and the observer. When a sound source moves towards an observer, the sound waves are compressed, resulting in a higher frequency or pitch (called blue shift). Conversely, when the source moves away, the waves stretch, leading to a lower frequency or pitch (red shift). This phenomenon applies not only to sound waves but also to light waves and other types of waves. Understanding the Doppler effect is crucial in various fields, such as astronomy (to determine the motion of stars and galaxies), meteorology (to study weather patterns using Doppler radar), medicine (for Doppler ultrasound to measure blood flow), and in everyday applications like police radar for measuring vehicle speeds. It illustrates how motion affects wave properties and how these changes are perceived by observers, influencing our understanding of the universe and technological advancements.
See lessThe fluctuations in the frequency of a sound source are called
The fluctuations in the frequency of a sound source are called the Doppler effect (Option B). The Doppler effect is a change in the frequency of a wave in relation to an observer who is moving relative to the wave source. This effect is most commonly experienced with sound waves. When a sound sourceRead more
The fluctuations in the frequency of a sound source are called the Doppler effect (Option B). The Doppler effect is a change in the frequency of a wave in relation to an observer who is moving relative to the wave source. This effect is most commonly experienced with sound waves. When a sound source moves toward an observer, the sound waves are compressed, resulting in a higher frequency or pitch (an effect called a blue shift). Conversely, when the sound source moves away from the observer, the sound waves are stretched, leading to a lower frequency or pitch (an effect called a red shift). This principle not only applies to sound waves but also to electromagnetic waves, such as light. The Doppler effect has practical applications in various fields, including astronomy, radar and sonar technology, medical imaging (Doppler ultrasound), and even in everyday phenomena like the changing pitch of a passing siren. Understanding this effect is essential in analyzing the motion and speed of objects relative to an observer.
See less