## What is the angle of reflection when the incident ray makes an angle of 30 0 with i the normal II the mirror?

The incident ray will have an angle of reflection of 30 degrees (made with a surface normal to the mirror surface). The reflected ray will make an angle of 60 degrees (90 – 30 degrees) with the mirror surface.

## Are of light is incident on a plane mirror at an angle of 30 degree what is angle of reflection?

A ray of light is incident towards a plane mirror at an angle of 30-degrees with the mirror surface. The angle of reflection is 60 degrees. (Note that the angle of incidence is not 30 degrees; it is 60 degrees since the angle of incidence is measured between the incident ray and the normal.) 3.

## What will be the angle of incidence if a ray of light is reflected back at an angle of 30?

Hence, angle of incidence = angle of reflection = 30 degrees. The incident ray will have an angle of reflection of 30 degrees (made with a surface normal to the mirror surface). The reflected ray will make an angle of 60 degrees (90 – 30 degrees) with the mirror surface.

## What is angle of incidence ray?

In geometric optics, the angle of incidence is the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the normal. The angle of incidence at which light is first totally internally reflected is known as the critical angle.

## What is angle of incidence called when angle of refraction is 90?

When the angle of incidence in water reaches a certain critical value, the refracted ray lies along the boundary, having an angle of refraction of 90-degrees. This angle of incidence is known as the critical angle; it is the largest angle of incidence for which refraction can still occur.

## Is there an angle at which there is no refracted light?

when there is an angle of refraction! Imagine the angle of incidence getting larger and larger for the case of n1>n2. Eventually the refracted ray will make an angle of 90° with the surface normal. If the angle of incidence is increased beyond that angle, then refraction does not occur!

## What is the relationship between sin i and sin r?

If i is the angle of incidence of a ray in vacuum (angle between the incoming ray and the perpendicular to the surface of a medium, called the normal) and r is the angle of refraction (angle between the ray in the medium and the normal), the refractive index n is defined as the ratio of the sine of the angle of …

## Why is sin a sin R constant?

/frac{sin/;i}{sin/;r}=constant=/mu Where i is the angle of incidence and r is the angle of refraction. This constant value is called the refractive index of the second medium with respect to the first. Snell’s law formula is derived from Fermat’s principle.

## What is C Snells law?

it is defined as n = c/v. where c is speed of light in vaccum, and v is velocity of light in the material. The refractive index is used in (not defined by) Snell’s law, which relates the angle of incidence to the angle of refraction when light passes from one material into another.

n = c / v