Choose the correct options for the following questions.
The appearance of colors in the soap (or oil) film results from:
Difficulty: Easy
A:
Dispersion
B:
Interference
C:
Reflection
D:
Refraction
Two sources are said to be coherent if they have:
Difficulty: Easy
A:
Same amplitude
B:
Same wavelength
C:
Definite phase relation with each other
D:
None
To observe interference of light, the condition, which must be met with is that the sources must be:
Difficulty: Easy
A:
Monochromatic
B:
Phase coherent
C:
Both of above
D:
None
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