Select the correct sequence of colours occurred in rainbow :

Q: Select the correct sequence of colours occurred in rainbow :

Select the correct sequence of colours occurred in rainbow :

Question

Accepted Answer

The correct option is 3:
The correct option lists the sequence of colors as Violet, Indigo, Blue, and Green. This represents the precise order of the first four colors appearing from the inner edge of the primary rainbow arc outwards. A rainbow is fundamentally an optical phenomenon caused by the *dispersion* of sunlight as it passes through raindrops. Dispersion means white light splits into its constituent wavelengths because each color bends at a slightly different angle. Violet light, which has the shortest wavelength, is refracted (bent) the most, causing it to form the innermost band of the primary rainbow. It is consecutively followed by Indigo, Blue, and then Green, which are the initial four colors of the mnemonic VIBGYOR (Violet, Indigo, Blue, Green, Yellow, Orange, Red).

The incorrect option is 1:
Blue, Indigo, Violet, Green. This sequence is incorrect because it scrambles the natural order dictated by the physics of light. Since Violet light is bent the most by the water droplets due to its shorter wavelength, it must be the first color at the inner edge of the arc, not Blue. Indigo must follow Violet, and Blue follows Indigo. This selection does not follow the correct spectral arrangement from the most refracted to the least refracted light.

The incorrect option is 2:
Indigo, Blue, Green, Violet. This sequence is incorrect as it places Indigo before Violet and Violet at the very end of the list. In the continuous spectrum of a rainbow, Violet light has the shortest wavelength and is dispersed to the smallest angle (relative to the arc's center), making it the innermost color. Indigo is the color directly adjacent to it, appearing slightly further out. Therefore, Violet must always precede Indigo in an inner-to-outer arc listing, and placing Violet last is physically inaccurate.

The incorrect option is 4:
Green, Violet, Indigo, Blue. This selection is incorrect because it completely jumbles the order of wavelengths as they appear in the visible spectrum. The correct sequence is a continuous progression from the shortest wavelength (Violet) to the longest (Red). Placing Green first and then jumping to Violet before Indigo and Blue breaks the natural order of the spectrum. The colors in a rainbow, whether a subset or the whole, must follow the fixed sequence determined by the differential refraction of light.