Question:
How many colours are there in white light?
How many colours are there in white light?
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Mnemonic for 7 colours of spectrum: VIBGYOR = Violet, Indigo, Blue, Green, Yellow, Orange, Red.
Updated On: Sep 19, 2025
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The Correct Option is D
Solution and Explanation
Step 1: Concept of White Light:
White light is a combination of multiple colours of light that can be separated by dispersion (passing through a prism). Step 2: Newton’s Prism Experiment:
Isaac Newton showed that white light splits into a spectrum of 7 colours when passed through a glass prism. This is called the VIBGYOR spectrum. Step 3: Colours in White Light:
The seven colours are: \[ \text{Violet, Indigo, Blue, Green, Yellow, Orange, Red} \]
Step 4: Final Answer:
White light contains 7 colours.
White light is a combination of multiple colours of light that can be separated by dispersion (passing through a prism). Step 2: Newton’s Prism Experiment:
Isaac Newton showed that white light splits into a spectrum of 7 colours when passed through a glass prism. This is called the VIBGYOR spectrum. Step 3: Colours in White Light:
The seven colours are: \[ \text{Violet, Indigo, Blue, Green, Yellow, Orange, Red} \]
Step 4: Final Answer:
White light contains 7 colours.
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