When a light passes from glass to air, which of the following is correct for the path of the light?

The path of the light is bent away from the normal.

answer is c. The light waves are out of phase with each other.

whoops sent it without the options; they are:

The path of the light is bent toward the normal.

The path of the light is bent away from the normal.

The path of the light is parallel to the normal.

The path of the light is straight without any bends.

Which of the following is correct for the two coherent light waves to produce zero light? (Points : 2)

The light waves should travel in perpendicular directions.
The light waves are in phase with each other.
The light waves are out of phase with each other.
The light waves should pass through a prism.

When light passes from a denser medium such as glass to a less dense medium such as air, it undergoes a change in its direction of propagation. This phenomenon is known as refraction. To determine the correct path of the light, we can use the following principle:

1. The incident ray: This is the path of the light before it reaches the interface between the glass and air.

2. The normal: This is an imaginary line perpendicular to the interface between the two mediums, representing the boundary between them.

3. The refracted ray: This is the path of the light after it crosses the interface and enters the new medium.

The correct path of the light can be determined by applying Snell's law, which relates the angle of incidence (θ₁), the angle of refraction (θ₂), and the refractive indices (n₁ and n₂) of the two mediums. Snell's law is expressed as:

n₁sin(θ₁) = n₂sin(θ₂)

The refractive index (n) is a measure of how much a medium slows down the speed of light compared to its speed in vacuum. For glass, the refractive index is generally higher than that of air.

Based on Snell's law, when light passes from glass to air, the following is correct for the path of the light:

1. The incident ray approaches the interface at an angle θ₁ with respect to the normal.

2. The refracted ray bends away from the normal and travels within the air at an angle θ₂.

Therefore, the correct answer is that the refracted ray bends away from the normal when light passes from glass to air.