General Knowledge - Physics - Discussion

Discussion Forum : Physics - Section 1 (Q.No. 26)
26.
On a rainy day, small oil films on water show brilliant colours. This is due to
dispersion
interference
diffraction
polarization
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
22 comments Page 1 of 3.

Inyan.S said:   3 years ago
Why dispersion isn't the right answer?,

Light produces its component colours due to the dispersion of light. Right?

Correct me if I'm wrong.
(1)

Onwuanibe ruth said:   8 years ago
I still need to understand the meaning of both interference and dispersion.

So please would someone be of help?
(1)

Apiku Richard said:   8 years ago
The correct answer is dispersion. The oil forms a thin layer on the surface of the wet ground. This layer dispersed the light entering the thin oil layer. This dispersed light is totally internally reflected in the oil.
(1)

Baseerat said:   9 years ago
I am confused. I think this is due to Dispersion, not interference. Interference pattern consists of white and dark fringes, not on different color like a rainbow.

Would someone can clear my confusion?
(1)

Kennyjam said:   9 years ago
I doubt this ''interference'' as the answer. It should be Dispersion. The oil film acts as a medium which separates white lght into different components, due to the different speed rates of white light components.

Dhruv said:   10 years ago
What is polarization?

Balaji said:   10 years ago
Interference:

It is due to the super position of the secondary wavelets from two different wave fronts produced by two coherent sources.

Anshu said:   1 decade ago
How can two superimposing waves generate different colours?

Sasi sri said:   1 decade ago
@Shru.

Interference effects can be observed with all types of waves, for example, light, radio, acoustic, surface water waves or matter waves.

Seema singh said:   1 decade ago
Why should not dispersion be the correct answer?


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