When white light passes through the prism, the light colours bend differently. Arrange the following colours from the one that bends the least to the one that bends the most :
I. Blue
II. Green
III. Yellow
IV. Orange
Select the correct answer from the codes given below :

Correct option is C

The correct answer is (c) IV, III, II, I
Explanation:
· Dispersion: When white light passes through a glass prism, it splits into its constituent spectrum of colors. This phenomenon is called dispersion.
· Cause of Bending: Different colors of light have different wavelengths. The speed of light in glass depends on the wavelength: Red (longest wavelength) travels fastest, while Violet (shortest wavelength) travels slowest.
· Relationship: The amount of bending (deviation) is inversely proportional to the wavelength.
· Longer Wavelength Less Bending (Deviates Least)
· Shorter Wavelength More Bending (Deviates Most)
· VIBGYOR Order: The colors from least bending (top) to most bending (bottom) are:
· Applying to Options:
· IV. Orange
· III. Yellow
· II. Green
· I. Blue
Additional Information (Other Options):
· The other options represent incorrect sequences of the spectrum. For example, option (d) suggests Blue bends the least, which is scientifically incorrect as Blue has a short wavelength and high deviation.
Information Booster:
· Isaac Newton: He was the first scientist to use a glass prism to obtain the spectrum of sunlight. He also proved that a second identical prism placed in an inverted position can recombine the seven colors back into white light.
· Rainbows: A rainbow is a natural example of dispersion where raindrops act like tiny prisms, dispersing sunlight.