My Learning Cart
?
Categories
Account

In a thin film of oil on water, which color will appear at the center of the pat

₹0.0
Login to Download
  • 📥 Instant PDF Download
  • ♾ Lifetime Access
  • 🛡 Secure & Original Content

What’s inside this PDF?

Question: In a thin film of oil on water, which color will appear at the center of the pattern if the film thickness is such that it causes constructive interference for blue light? (2022)

Options:

  1. Red
  2. Green
  3. Blue
  4. Yellow

Correct Answer: Blue

Exam Year: 2022

Solution: 

If the film thickness causes constructive interference for blue light, blue will appear at the center of the pattern.

In a thin film of oil on water, which color will appear at the center of the pat

Practice Questions

Q1
In a thin film of oil on water, which color will appear at the center of the pattern if the film thickness is such that it causes constructive interference for blue light? (2022)
  1. Red
  2. Green
  3. Blue
  4. Yellow

Questions & Step-by-Step Solutions

In a thin film of oil on water, which color will appear at the center of the pattern if the film thickness is such that it causes constructive interference for blue light? (2022)
  • Step 1: Understand that a thin film of oil on water can create colorful patterns due to interference of light.
  • Step 2: Know that constructive interference happens when light waves combine to make a brighter color.
  • Step 3: Identify that if the film thickness is right for blue light, it means blue light waves are reinforcing each other.
  • Step 4: Conclude that since blue light is being reinforced, blue will be the color that appears at the center of the pattern.
  • Thin Film Interference – The phenomenon where light waves reflected from the top and bottom surfaces of a thin film interfere with each other, leading to constructive or destructive interference depending on the film thickness and the wavelength of light.
  • Constructive Interference – Occurs when the path difference between two waves is an integer multiple of the wavelength, resulting in increased amplitude and brightness of the observed color.
  • Wavelength of Light – Different colors of light correspond to different wavelengths, with blue light having a shorter wavelength compared to other visible colors.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely
Home Practice Performance eBooks