Why does the refracted ray bend away from the normal?

As the light enters the water, it is refracted. Since the light is passing from air (less dense) into water (more dense), it is bent towards the normal. Upon exiting the water, the light is bent away from the normal as it passes from water (more dense) and into air (less dense).

Why does a ray of light bends towards the normal when it goes from rarer to denser medium and away as it goes from denser to rarer medium?

Refraction of light when it goes from a rarer medium to a denser medium: Thus, when a ray of light goes from air to glass, it bends towards the normal (at the point of incidence). In this case, the angle of refraction (r) is smaller than the angle of incidence (i).

Will the ray of light bend towards or away from the normal?

The light bends towards the normal line. If light travels enters into a substance with a lower refractive index (such as from water into air) it speeds up. The light bends away from the normal line. A higher refractive index shows that light will slow down and change direction more as it enters the substance.

What happens if a light ray is incident along the line of normal?

This line is known as a normal line (labeled N in the diagram). The normal line divides the angle between the incident ray and the reflected ray into two equal angles. 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.

Does the ray bend towards the normal or away from the normal when it enters glass from air?

The light ray refracts towards the normal upon entering the glass (crossing from a fast to a slow medium) and refracts away from the normal upon exiting the glass (crossing from a slow to a fast medium). This is shown in the diagram at the right.

Why there is no bending of light in normal incidence?

When light is at normal incidence, the in-plane wave vector is zero, so there’s no need for refraction.

Why a light ray does not bend when it enters a new medium along the normal line?

Due to the symmetry of the system, there’s nothing to distinguish between left and right relative to the surface. The reason that the light is not refracting is that it will take the path that will take the shortest time from through the medium. This is essentially what snell’s law gives us.

When a ray of light moves from medium A to medium B it bends away from the normal which of the two media will have more speed of light?

A ray of light moving from a rarer to a denser medium bends towards the normal whereas a ray entering a rarer medium from a denser medium bends away from the normal. So, medium A is the rarer medium in this case.

Does the ray bend toward or away from the normal is that always true when air is the top material?

As water is optically denser than air, a ray of light entering from air into the water will bend towards the normal. The light ray will bend towards the normal because air is a rarer medium and water is a denser medium. Since light is travelling from rarer to a denser medium, So, it will bend towards the normal.

When light is incident normally then?

bends towards the normal. travels along the same path without any deviation.

Where does the light ray go after reflection if the ray coming along the principal axis of a mirror?

centre of curvature
The light ray which is incident along the principal axis of a mirror falls normally on the mirror, and hence, it retraces its path. From the figure it is clear that is passes through the centre of curvature.

Why does a ray of light bend towards the normal when it enters from air to glass?

Answer: The ray of light undergoes refraction in both the cases due to which it bends. Explanation: When light enters from air to glass slab its speed decreases and bends towards the normal.