Common Physics Questions with one line Answer
Common Physics Questions with one line Answer Read Post »
Physics
Structure of Human Ear and Hearing Aid
A hearing aid is a battery-operated, an electronic device that receives sound from the atmosphere and converts it into electrical signals. Humans are privileged as they are able to hear with the help of an extremely sensitive device known as the “Ear”.We receive audible frequencies from our surrounding which is then converted into electrical signals that are passed through a special nerve called “Auditory Nerve” to our brain.
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SONAR : “Sound Navigation and Ranging”
“Sonar” can be defined as “ Sound Navigation and Ranging” This device is used to measure the distance, direction and speed of underwater objects by using the same ultrasonic waves.
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Applications of Ultrasound (ultrasonic sound waves)
The high frequency waves are known as ultrasound. ultrasonography is also done to examine the foetus during pregnancy to detect defect or growth abnormalities Ultrasound waves are excessively used to break small stones formed in the kidney into fine grains which are later flushed out with urine.
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Sound: Reverberation, and Range of Hearing
Reverberation is the persistence of a sound after a sound is produced. A reverberation is created when a sound signal is reflected multiple times until it reaches sound waves that can not be heard by human ears.
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Speed of sound in different media
The speed of the sound in a medium is affected by the 1. It depends upon the density of the medium. For instance – The speed of sound is maximum through solid.2. It depends upon the temperature of the medium.For instance – As the temperature increases, so does the speed of sound.
3. It also depends on the humidity in the air.
For instance – As humidity increases, so does the propagation of sound.
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Sound waves : Different Characteristics – Frequency, Amplitude, Pitch, Timber
Compression (C) – These are the regions where particles are crowded together and are represented by the upper portion of the curve that is known as the peak The region of maximum compression is represented by its peak, Therefore, compressions are regions where density, as well as pressure, is high 2. Rarefactions (R) – These are the regions where particles are spread apart and are represented by the lower portion of the wave curve that is known as the crest.These regions always have lower pressure.
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Sound: Production and propagation
The basic way for the production of Sound is “vibration”. When an object vibrates it produces sound. The matter or substance through which sound is transmitted from the point of generation to the listener (starting point to ending point) is known as a medium, which can be solid, liquid, or gas.
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Three Laws of Motion
Motion is a kind of state in which some distance is
being covered with respect to the time that possesses some speed. We have a well-flourished
generation that believes in science and technology which is purely adapted from
somewhere who is none other then but our respective and intelligent scientists
who did a lot of inventions to make our life easy and fruitful.
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Types Of Motion in Physics
This motion is a kind of motion in which an object moves from one point to another uniformly in the same line or direction. Translational motion.
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