Question

How many colours are there in the sun rays?

• A. 10
• B. 8
• C. 9
• D. 7

Hint:

Sunlight contains 7 visible colours — VIBGYOR — which become visible through prism dispersion or rainbows.

Answer 1

The Correct Option is D

Step 1: Dispersion of sunlight
When sunlight passes through a prism, it gets split into different colours — a phenomenon known as dispersion.

Step 2: What colours are observed?
The seven colours visible in the spectrum of sunlight are:
Violet, Indigo, Blue, Green, Yellow, Orange, and Red. This is remembered using the acronym VIBGYOR.

Step 3: Evaluating options
(A) 10 $\Rightarrow$ Incorrect. Only 7 colours are observed.
(B) 8 $\Rightarrow$ Incorrect.
(C) 9 $\Rightarrow$ Incorrect.
(D) 7 $\Rightarrow$ Correct. VIBGYOR contains 7 distinct colours.
\[ \boxed{\text{Correct Answer: (D) 7}} \]