|
What causes change in the colours of the soap or oil films for the given beam of light |
|||||||
|
a) |
Angle of incidence |
b) |
Angle of reflection |
c) |
Thickness of film |
d) |
None of these |
|
What causes change in the colours of the soap or oil films for the given beam of light |
|||||||
|
a) |
Angle of incidence |
b) |
Angle of reflection |
c) |
Thickness of film |
d) |
None of these |
|
(c) For viewing interference in oil films or soap bubble, thickness of film is of the order of wavelength of light |