Total Internal reflection

Presentation

•

Physics, Science

•

10th - 12th Grade

•

Practice Problem

•

Hard

•

NGSS

HS-PS4-1, HS-PS4-3, HS-PS4-5

Standards-aligned

Sharon El Masarany

Used 17+ times

FREE Resource

6 Slides • 16 Questions

Total Internal reflection

Fast start

complete the table using the following slides

Fill in the Blanks

Ray 1

Type answer...

Fill in the Blanks

Ray 2 (to 2 s.f)

Type answer...

Fill in the Blanks

Ray 3 (to 2 s.f)

Type answer...

Fill in the Blanks

Ray 4 (to 2 s.f)

Type answer...

Fill in the Blanks

Ray 5 (to 2 s.f)

Type answer...

Open Ended

What happened when the ray reached an angle of incidence of

50^o

and why? What would you see?

Type response here

Total internal reflection

https://www.focuselearning.co.uk/u/33209/CqbkcBFmzadtchEebvpCtbvojAtjqbymr - Focus learning - essential physics - refraction of light and optic fibres

Calculating the critical angle

Multiple Select

Chose the TWO conditions are NOT correct for total internal reflection to take place

The incident angle should be less than the critical angle

The incident angle should be greater than the critical angle

Light should travel from a denser to a lighter medium

Light should travel from a lighter to a denser medium

Multiple Choice

Choose the correct statement that describes what happens to the ray of light if the critical angle is 48^o and the angle of incidence is 48^o

refract

totally internally reflect

travel along the boundary

Multiple Choice

When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,

total internal reflection occurs.

angle of refraction is equal to 90 degree.

light is refracted out

light travel in straight line

Multiple Choice

_____ cables transmit beams of light without allowing any of the light to escape until it gets to the end of the cable.

Ethernet

Fiber optic

Armored

Coaxial

Multiple Choice

Fiber optic cables work because of the principle of _____.

total internal refraction

incomplete internal refraction

total internal reflection

partial internal reflection

Multiple Choice

What happens to light during total internal reflection?

The angle of incidence is greater than the critical angle.

The angle of reflection is the same as the critical angle.

The angle of refraction is less than the critical angle.

The angle of incidence is zero.

Multiple Choice

Light travels from air to water (n=1.33), what is the critical angle?

48.8

46.4

52.4

not possible

Multiple Choice

Light travels from glass (n=1.66) to water, what is the critical angle for these two mediums?

53.2

48.8

not possible

Multiple Choice

Question a -

Light is refracted out of the air/diamond interface and reflected

Total internal reflection takes place only

Multiple Choice

Question b -

Light is refracted out of the water/diamond interface and reflected

Total internal reflection takes place only

Further practice

Page 174 - 175 text book - answer questions 1 to 4
You will be asked to share your answers later

Total Internal reflection

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