A) 100 \[\overset{0}{\mathop{A}}\,\]
B) 10,000 \[\overset{0}{\mathop{A}}\,\]
C) 1 mm
D) 1 cm
Correct Answer: B
Solution :
Diffraction refers to various phenomena associated with wave propagation, such as bending, spreading and interference of waves emerging from apertures. Its effects are generally only noticeable for waves where the wavelength is on the order of the feature size of the diffracting objects or apertures. For thin films it is equal to thickness of film approximately\[10,000{\AA}\].
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