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Applications of total internal reflectionApplications of total internal reflection

Answer Text:
Applications of total
internal reflection
1. Periscope: a prism periscope consists of two right angled glass prisms of angles #45^0,90^0 and 45^0#
arranged as shown below.
They are used to observe
distant objects.
2. Prism binoculars: the arrangement of lenses and prisms is as shown below. Binoculars reduce the distance of objects such that they seem to be
nearer.

3. Pentaprism: used in cameras to change the inverted images formed into erect and actual image in front of the
photographer.

4. Optical fibre:

this is a flexible glass rod of small diameter. A light entering through them undergoes repeated internal
reflections.
-They are used in medicine to observe or view internal organs of the body
4. Dispersion of white light: the splitting of light into its constituent colours is known as dispersion.
Each colour represents a different wavelength as they strike the prism and therefore refracted differently as shown.