# What are the 2 requirements for total internal reflection?

## What are the 2 requirements for total internal reflection?

Two important conditions for total internal reflection are:

• Angle of incidence (i) should be greater than critical angle (ic).
• Ray should travel from denser medium to rarer medium.

## What are the conditions for total internal refraction?

The light ray must travel from denser medium to rarer medium. The angle of incidence must be greater than the critical angle.

What are the necessary conditions for this phenomenon to occur?

(i) The incident ray on the interface should travel in optically denser medium. (ii) The angle of incidence should be greater than the critical angle for the given pair of optical media.

### What is total internal reflection write the conditions to have total internal reflection?

In general, total internal reflection takes place at the boundary between two transparent media when a ray of light in a medium of higher index of refraction approaches the other medium at an angle of incidence greater than the critical angle. For a water-air surface the critical angle is 48.5°.

### What is total internal reflection give conditions for total internal reflection and derive a relation for it?

What is total internal reflection explain with diagram what are necessary conditions for occurrence of total internal reflection?

Two Requirements for Total Internal Reflection TIR only takes place when both of the following two conditions are met: the light is in the more dense medium and approaching the less dense medium. the angle of incidence is greater than the so-called critical angle.

## What are the three conditions that must be met for refraction to occur?

For refraction to occur substances must be transparent and light ray must pass from region of one index of refraction to another i.e. both substances should have different refractive indices should and the light ray must impinge at an angle other than normal which must not be less than the critical angle.

## Under what conditions is total internal reflection possible explain with suitable example?

Answer: The light rays must be passing from a denser medium to a rarer medium i.e. from glass to air. The angle of incidence must be greater than critical angle of denser medium. Critical angle is the angle of incidence in the denser medium corresponding to which the angle of refraction in rarer medium is 90 degree.

What is total internal reflection 1 II state 2 conditions necessary for the total internal reflection to occur?

(b) The two necessary conditions for total internal reflection are: i. The light must travel from a denser medium to a rarer medium. ii. The angle of incidence must be greater than the critical angle for the pair of media.

### What is total internal reflection state two conditions necessary for the total internal reflection to occur draw diagrams to illustrate the total internal reflection?

The conditions necessary for the phenomena to take place are: Light should travel from denser medium to the rarer medium. Angle of incidence should be greater than the critical angle in denser medium for a pair of media in contact.

### What are two conditions that will cause refraction not to occur?

When light passes from one medium to another, refraction does not happen under any one of the given conditions: If the ray is incident normally, then Angle of incidence = Angle of refraction = 0. So, there will not be any refraction. If both media have the same refractive index, then also refraction will not occur.

Which of the following conditions is not necessary for refraction to occur?

Terms in this set (22) Which of the following conditions is not necessary for refraction to occur? The light must have only one wavelength. How is light affected by an increase in the index of refraction?