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# Is the angle of incidence is greater than the angle of refraction when light passes from a less dense to denser medium?

Updated: 10/24/2022

Wiki User

13y ago

If you meant optical density by the term 'denser ' Then the answer is....

The light bends towards normal when it travels from a optically less dense medium to optically dense medium. So angle of incidence is greater than the angle of refraction

Wiki User

13y ago

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Q: Is the angle of incidence is greater than the angle of refraction when light passes from a less dense to denser medium?
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### What are characteristics of refraction?

Refraction is the bending of light as it passes from one medium to another, such as air to water. This bending occurs due to the change in speed of light as it travels through different mediums. The amount of bending depends on the angle at which the light enters the new medium and the speed of light in each medium.

### What is total internal refraction?

When the angle of incidence is greater than the critical angle,the light ray reflects into denser medium at interface. This is total internal refraction

### What are the conditions for total internal reflection to take place?

Light must travel from the optically denser medium to the optically less dense one. For total internal reflection to occur, the angle of incidence in the optically denser medium must be greater than the critical angle of that medium. The critical angle is that angle of incidence in the optically denser medium for which the angle of refraction is 90o.

### Why the ray of light does not bend when it passes perpendicularly from rarer medium to denser medium?

Since the angle of incidence is 0, there is no chance of refraction and so the angle of refraction too becomes 0.

### What does refraction and reflection have to do with mirages?

Actually it is refraction process and specifically indentified as total internal reflection. The condition for total reflection is that the ray has to traverse from denser medium to the rarer medium and the angle of incidence has to be more than the critical angle.

### What will happen to the angle of refraction if the angle of incidence is made smaller for light passing from rarer to denser medium and how?

If the angle of incidence is made smaller for light passing from a rarer to a denser medium, the angle of refraction will also decrease. This is because of the law of refraction, which states that light bends towards the normal when moving from a rarer medium to a denser medium. Therefore, as the angle of incidence decreases, the angle of refraction will also decrease.

### What is Optical denser medium?

An optical denser medium refers to a material with a higher refractive index compared to the surrounding medium. This causes light to change direction when it passes from one medium to another, resulting in effects like refraction and total internal reflection. Examples of optical denser mediums include glass and water.

### What two mediums have to be present for total internal reflection?

Any two media having different optical densities is necessary. The conditions for total internal reflection are: 1. Light must travel from the optically denser medium to the optically less dense one. 2. The angle of incidence is greater than the critical angle, which is the angle of incidence in the optically denser medium for which the angle of refraction is 90o.

### Does the speed of light changes when it goes from rarer medium to denser medium having angle of incidence equal to 0?

The speed of light changes when it goes from one medium to another one with a different index of refraction. The angle of incidence doesn't influence the change in speed.

### What is optical medium?

Optical dense refers to the index of refraction. If one medium is optically denser than another, then its index of refraction is larger, meaning the speed of light in the optically denser medium is smaller.

### What is internal reflection?

Total internal reflection can happen only when a beam of light travelling through a dense medium crosses the interface with a rarer medium. For example, through a glass piece to air. When such a beam reaches an interface it makes an angle (called the angle of incidence) with the perpendicular at that point. When the beam exits the interface into the rarer medium. it makes a larger angle(called the angle of refraction) with the same perpendicular. As the angle of incidence increases, so does the angle of refraction. There is one value of the angle of incidence for which the angle of refraction is 90 degrees and the emerging ray is tangential to the interface. This is called the critical angle. For all angles of incidence greater than the critical angle the incident ray will not emerge into the rarer medium at all. In stead it gets reflected back into the denser medium itself. This phenomenon is called total internal reflection. Rainbows are a result of this phenomenon.

### What is total internal reflection?

Total internal reflection can happen only when a beam of light travelling through a dense medium crosses the interface with a rarer medium. For example, through a glass piece to air. When such a beam reaches an interface it makes an angle (called the angle of incidence) with the perpendicular at that point. When the beam exits the interface into the rarer medium. it makes a larger angle(called the angle of refraction) with the same perpendicular. As the angle of incidence increases, so does the angle of refraction. There is one value of the angle of incidence for which the angle of refraction is 90 degrees and the emerging ray is tangential to the interface. This is called the critical angle. For all angles of incidence greater than the critical angle the incident ray will not emerge into the rarer medium at all. In stead it gets reflected back into the denser medium itself. This phenomenon is called total internal reflection. Rainbows are a result of this phenomenon.