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Why speed decreases in denser medium and increases in rare medium?
Wiki User
∙ 10y ago
The speed depends on many factors, and one of the factor is friction. In denser medium (WATER) friction is more so speed is less, while in free space and vacuum friction is less speed is more, speed and friction is inversely proportional to each other.so, speed decreases in denser medium than in rare medium.
speed α 1/friction
So, automobiles like cars are applied a lubricant on its outer surface which decreases the friction and move with more speed. Now automobile companies working to reduce friction which helps to enhance speed.
If we go in depth in this topic friction is the major criteria that effect the speed. we can run faster in free space(rarer medium) than in water(denser medium) i.e.,water is in liquid state the water molecules are closely packed so it has more defensive power i.e., more friction, While in free space the air molecules are lightly packed so it has less friction.
In this way we can prove that body moves faster in rarer medium than in denser medium.
Eg: throwing a ball in water travels less distances than compared a ball throwing in free space
Wiki User
∙ 10y ago
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The denser the medium through which it is traveling the slower a what wave propagates?
Electromagnetic wave, namely, light as it travels through denser medium its speed decreases from its speed when it travels through air or vacuum.
What happens to the speed and wavelenght and frequency of a wave when it reaches the boundary between two media?
Frequency never changes since it depends only on source. Speed can either increase or decrease, depending on the direction of travel of light. This would cause an increase or decrease in wavelength respectively. Speed increases when light travels from an optically denser medium to an optically less dense one. (For example, when light travels from water to air) Speed decreases when light travels from an optically less dense medium to an optically denser medium.
A ray of light travelling from medium A to medium B bends away from the Norman Which medium is optically denser?
Medium A is the more optically dense medium. As when the light enters B its speed increases taking it toward the normal.
What increases when a wave period decreases.?
When a wave period decreases, speed increases.
How does speed affect Power?
Speed is directly related to power. As speed increases, power also increases. And as speed decreases, power also decreases.
What happens to the speed of light as light travels though materials?
The speed of light is not affected by the density of the medium. Its the path of the light that is affected . Phenomenon like reflection or refraction take place when the light goes to different medium
When the temperature of a medium increases the speed of sound decreases true or false?
No it is not true. When the temperature of the medium increases the speed of sound in that medium increases.
The denser the medium through which it is traveling the slower a what wave propagates?
Electromagnetic wave, namely, light as it travels through denser medium its speed decreases from its speed when it travels through air or vacuum.
In general how does changing the temperature of a medium affect the speed of sound through that medium?
As the temperature of the medium increases, so does the speed of sound. As the temperature decreases the speed of sound decreases (this is true for air, at least). To calculate speed of sound in air: V = 331 + 0.59T where T is the air temperature in degrees C.
What happens to the speed and wavelenght and frequency of a wave when it reaches the boundary between two media?
Frequency never changes since it depends only on source. Speed can either increase or decrease, depending on the direction of travel of light. This would cause an increase or decrease in wavelength respectively. Speed increases when light travels from an optically denser medium to an optically less dense one. (For example, when light travels from water to air) Speed decreases when light travels from an optically less dense medium to an optically denser medium.
What is the effect on the speed of light when temperatures rise in the medium?
When temperature rises, the density of the medium changes. Speed of light through a medium is inversely proportional to the density of medium. So when the temperature increases, the density decreases and the speed of light in that medium increases. Note that this is the indirect effect of temperature. If light is travelling through vaccuum , then the temperature will have no effect on the speed of light.
A ray of light travelling from medium A to medium B bends away from the Norman Which medium is optically denser?
Medium A is the more optically dense medium. As when the light enters B its speed increases taking it toward the normal.
What increases when a wave period decreases.?
When a wave period decreases, speed increases.
How does speed affect Power?
Speed is directly related to power. As speed increases, power also increases. And as speed decreases, power also decreases.
How do you convert short wave to medium wave?
Sound . . .direct the sound into a less-dense medium. Its frequency remains constant butits speed decreases, so its wavelength increases.Light . . .direct the light into a medium with a higher refractive index. Its frequency remainsconstant but its speed decreases, so its wavelength increases.
As the temperature of a medium increases the rate of speed of sound through the medium what?
The speed of sound through the medium also increases.
Why does wavelength o light decrease when enter to denser medium?
That is because the light's SPEED decreases. Also, because the frequency doesn't change. As a reminder, the wavelength is equal to the speed of the wave, divided by the frequency.
