GENERAL KNOWLEDGE

Detailed explanation-1: -This is due to the interference property of light.

Detailed explanation-2: -Complete answer: The bright colors seen in an oil film or in the soap bubble are caused by interference. The brightest colors are those that interfere constructively. This interference is between light reflected from upper and lower surfaces of the film; thus, the effect is understood as thin film interference.

Detailed explanation-3: -The correct answer is Interference. On a rainy day, small oil films on water show brilliant colors. This is due to Interference. Interference is a phenomenon in which two waves superimpose to form a resultant wave of the greater, lower, or same amplitude.

Detailed explanation-4: -The beautiful colors you see on the soap film are due to interference patterns, created when light reflects off the two surfaces of the thin soap film. Interference patterns are created when two reflected waves line up in phase or out of phase.

Detailed explanation-5: -Detailed Solution. The correct answer is refraction. A thin oil film on a water surface appears coloured because of thin-film interference which involves the interference of light waves reflecting off the top surface of a film with the waves reflecting from the bottom surface.