A thin oil film on a water surface appears coloured because of

1.	A thin oil film on a water surface appears coloured because of
Answer» <html><body><p> Interference</p><br/><br/><p>A thin oil film on a <a href="https://interviewquestions.tuteehub.com/tag/water-1449333" style="font-weight:bold;" target="_blank" title="Click to know more about WATER">WATER</a> <a href="https://interviewquestions.tuteehub.com/tag/surface-1235573" style="font-weight:bold;" target="_blank" title="Click to know more about SURFACE">SURFACE</a> <a href="https://interviewquestions.tuteehub.com/tag/appears-881937" style="font-weight:bold;" target="_blank" title="Click to know more about APPEARS">APPEARS</a> <a href="https://interviewquestions.tuteehub.com/tag/coloured-922406" style="font-weight:bold;" target="_blank" title="Click to know more about COLOURED">COLOURED</a> because of thin-film interference which involves the interference of light waves reflecting off the <a href="https://interviewquestions.tuteehub.com/tag/top-1422115" style="font-weight:bold;" target="_blank" title="Click to know more about TOP">TOP</a> surface of a film with the waves reflecting from the bottom surface. The refractive index of oil is larger than that of water, therefore the reflection on the back side occurs.</p></body></html>

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