| A narrow beam of white light is passed through a glass prism as shown in the figure. |
|
| Which of the following is the correct order of colours emerging from the prism? |
A)
P
Q
R
Red
Blue
Green
B)
P
Q
R
Red
Green
Blue
C)
P
Q
R
Blue
Green
Red
D)
P
Q
R
Blue
Red
Green
Correct Answer: B
Solution :
When a narrow beam of light is allowed to pass through .a prism, the white light splits into seven colours called spectrum. The order of colours emerging from the prism is Violet, Indigo, Blue, Green, Yellow, Orange and Red with Red colour deviating the least. So, P is Red, Q is Green and R is Blue.
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