A soap bubble shows colours when illuminated with white light. This is due to – (1) Diffraction (2) Polarization (3) Interference (4) Reflection

A soap bubble shows colours when illuminated with white light. This is due to – (1) Diffraction (2) Polarization (3) Interference (4) Reflection
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(3) Interference Explanation: The iridescent colours of soap bubbles are caused by interfering of (internally and externally) reflected light waves and are determined by the thickness of the film. This phenomenon is not the same as the origin of rainbow colours (caused by the refraction of internally reflected light), but rather are the same as the phenomenon causing the colours in an oil slick on a wet road.
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A soap bubble shows colours when illuminated with white light. This is due to (1) Diffraction (2) Polarisation (3) Interference (4) Reflection

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The information of brilliant colors in a thin soap film is a consequence of the phenomena of - (1) Polarization and interference (2) Diffraction and dispersion (3) Multiple refraction and dispersion (4) Multiple reflection and interference

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Last Answer : c)dispersion

The blue colour of water in the sea is due to – (1) absorption of other colours except blue by water molecules (2) scattering of blue light by water molecules (3) reflection of blue light by impurities in sea water (4) reflection of blue sky by sea water

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Last Answer : total internal reflection of light