Question:
The bubble of soap appears coloured due to
The bubble of soap appears coloured due to
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Soap bubbles show colours because of interference between light waves reflecting off the two surfaces of the bubble's thin film.
Updated On: Sep 12, 2025
- diffraction
- polarization
- interference
- reflection
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the phenomenon.
When light falls on a soap bubble, it undergoes interference due to the thin film of the bubble. The light waves reflecting off the two surfaces of the thin film interfere with each other, resulting in the appearance of bright and dark bands of color.
Step 2: Explanation of interference.
Interference occurs when two light waves of the same frequency superimpose, leading to constructive and destructive interference. This is the reason why soap bubbles show colors depending on the thickness of the bubble film.
Step 3: Conclusion.
Therefore, the soap bubble appears coloured due to the phenomenon of interference.
\[ \boxed{\text{Correct Answer: Interference}} \]
When light falls on a soap bubble, it undergoes interference due to the thin film of the bubble. The light waves reflecting off the two surfaces of the thin film interfere with each other, resulting in the appearance of bright and dark bands of color.
Step 2: Explanation of interference.
Interference occurs when two light waves of the same frequency superimpose, leading to constructive and destructive interference. This is the reason why soap bubbles show colors depending on the thickness of the bubble film.
Step 3: Conclusion.
Therefore, the soap bubble appears coloured due to the phenomenon of interference.
\[ \boxed{\text{Correct Answer: Interference}} \]
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