Optics Question 1061
Question: What causes changes in the colours of the soap or oil films for the given beam of light
[AFMC 2005]
Options:
A) Angle of incidence
B) Angle of reflection
C) Thickness of film
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
For viewing interference in oil films or soap bubble, thickness of film is of the order of wavelength of light.
