Question

Name the devices in which total internal reflection of light is used .​

Answer 1

Answer:

periscopes,binoculars,telescopes,microscopes, spectroscopes

Explanation:

Answer 2

The correct answer is:

Explanation:

• Optical fibre, Periscope, Telescope and Binoculars.

• Total Internal Reflection - This is a phenomenon which occurs when:

1. Rays of light moves from a medium having greater density or refractive index to a medium having lesser density or refractive index.
2. The angle made by the rays of light with respect to the imaginary perpendicular(normal) drawn at the interface of the two media is more than the Critical angle.
3. The rays of light instead of getting refracted into the medium with lower density gets reflected back into the same medium with higher density.

• Critical angle can be defined as the specific angle of incidence formed by a ray of light moving from a medium of higher density or refractive index to a medium with lower density or refractive at which the reflected ray moves along the interface or junction in between the two media.