# In which cases the angle of incidence and angle of refraction are equal?

## In which cases the angle of incidence and angle of refraction are equal?

If both the media are having the same refractive index, then angle of incidence and angle of refraction are same. If the incident ray falls perpendicularly on the second medium, then the incident angle and refracted angle are same.

## Why the angle of incident is equal to the angle of refraction?

Angle of incidence is equal to angle of reflection not refraction. When a ray of light (i.e., the incident ray) goes from rarer to denser medium, the ray (refracted ray) bends towards the normal in the denser medium. If ray of light travels from denser to rarer medium the refracted ray bends away from the normal.

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Under what condition the angle of refractive will be equal to the angle of incidence?

The condition the angle of refraction will be equal to the angle of incidence: If the refractive index of both the media is same.

### In which case angle of incidence and angle of reflection is zero?

If the incident ray falls along the normal, the angle of incidence is 0 degrees, NOT 90 degrees. The angle is measured with the normal to the mirror and not with the plane of the mirror. Hence the angle of reflection is equal to 0 degrees.

### Which one is greater angle of incidence or angle of refraction?

Since the ray of light bends towards the normal, the angle of refraction is less than the incident angle. So in this case the angle of incidence is greater than the angle of refraction.

Is the angle of reflection is equal to the angle of refraction?

The law of reflection states that, on reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray. …

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#### In which condition incident ray and refracted ray are equal?

The condition the angle of refraction will be equal to the angle of incidence: 1. If the refractive index of both the media is same.

#### What happens when angle of incidence is 0?

Normal incidence is the case in which the angle of incidence is zero, the wavefront is parallel to the surface and its raypath is perpendicular, or normal, to the interface. Snell’s law describes the relationship between the angle of incidence and the angle of refraction of a wave.

When the angle of incidence in air was 0 Why was the angle of refraction 0?

So, the angle of inciden is zero and hence the angle of refraction is also zero. In other words,the ray which is incident normally on the interface between the two different media, propagates un deviated from one medium to other and there is no refraction.

## When the angle of incidence is greater than the angle of refraction it means the ray of light bends away from the surface of the material?

Direction of bending When a ray of light passes from a denser material (eg water or glass) into a less dense material (eg air) it is bent towards the surface between the two materials. This means that in this situation the angle of refraction is always greater than the angle of incidence.

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## When angle of incident is greater than angle of refraction What does it tell about medium?

The only way for the angle of refraction to be greater than the angle of incidence is for light to bend away from the normal. Since light only bends away from the normal when passing from a more dense medium into a less dense medium, then this would be a necessary condition for total internal reflection.

What is the angle between the incident ray and reflected ray if the incident ray is along the normal?

The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection. The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.