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1. constructively 2. is no 3. is a 4. a phase shift of 12 5. no phase shift 6. d

ID: 1440180 • Letter: 1

Question

1. constructively

2. is no

3. is a

4. a phase shift of 12

5. no phase shift

6. destructively

7. a phase shift of

When illuminated from above at A, light ray reflected from the air-oil interface undergoes___________.

A light ray reflected from the oil-water interface undergoes____________.

If the oil thickness at A is negligible compared to the wavelength of the light, then there____________significant shift in phase due to a path distance traveled by a ray in the oil

Thus the light reflected from the two surfaces will____________interfere for all visible wavelengths, and the oil will appear black when viewed from above.

Explanation / Answer

I have very clear his writing, but I'll try to respond to the initial faces

Frase 1)

When illuminated from above at A, light ray reflected from the air-oil interface undergoes______

no phase shift

Explanation: When moving from a higher refractive index material of another material with menor index the phase of the wave changes np / 2, but if the reflection is in the same medium no phase change

Frase 2

A light ray reflected from the oil-water interface undergoes____________.

a phase shift of /2

The oil has a greater refractive index than air

Frase 3

If the oil thickness at A is negligible compared to the wavelength of the light, then there____________significant shift in phase due to a path distance traveled by a ray in the oil

is a

Frase 4

Thus the light reflected from the two surfaces will____________interfere for all visible wavelengths, and the oil will appear black when viewed from above.

Destuctuctively

the beam reflected from the surface and the inside of the oil droplet has a phase shift of / 2 which interfere destructively