In an Experiment to Demonstrate Interference of Light,it Is Essential

question 7

Multiple Choice

In an experiment to demonstrate interference of light,it is essential that

• A)coherent sources of light be used.
• B)the light paths differ by not more than one-half wavelength.
• C)the light be monochromatic.
• D)the beam of light be a parallel beam.
• E)there be no difference in light paths.

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