Question

define TIR. don't copy

Answer 1

$\underline \bold{Solution:-}$

TOTAL INTERNAL REFLECTION

When the light ray refracts from denser to rare medium, and for a certain angle of incident then the ray travels along the interface of two media by making the angle of reflection equal to right angle.

The angle of incidence for which the reflected ray Travels along the interface of to media is called as Critical Angle.

The phenomena of bouncing back of light ray in the same medium when reflected from denser to rarer medium and falls in the interface that an angle greater to the critical angle for the given pair of media is called as total internal reflection.

The necessary condition of TIR are

• The light must refracts from denser to rare medium.

• The incidence must be above the critical angle for the pair of media.

Answer 2

Hello...

TIR - Total Internal Reflection..


Total internal reflection refers to the complete reflection of a ray of light within a given medium from the surrounding surface. 

➖➖➖➖➖Or ➖➖➖➖

The effect occurs when light meets between the medium where it's traveling of a smaller refractive index at angle of incidence which must be greater than the critical angle..

And this all light must be reflected back.!!

TIR is also used in :-

Binoculars,Single-lens reflex camera and Periscopes..





thank you...