Question

Given below are two statements, one is labelled as Assertion (A) and the other one is labelled as Reason (R).
Assertion (A) : The notation of Munsell colour chart is 2.5YR5/6.
Reason (R) : Because hue is 2.5 YR, value is 5 and chroma is 6
In light of the above statements, choose the correct answer from the options given below.

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
• C. (A) is true but (R) is false.
• D. (A) is false but (R) is true.

Hint:

Always remember the standard Munsell notation format: Hue Value/Chroma (e.g., $10\text{YR}\ 4/3$). The slash symbol separates the value (numerator) from the chroma (denominator).

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
The Munsell Soil Color Chart is a standardized system used to identify and record soil color objectively.
It classifies colors based on three variables: Hue, Value, and Chroma.

Step 3: Detailed Explanation:
Let us analyze the Assertion and the Reason:
- Assertion (A) is true: A typical soil color notation using the Munsell chart is written as $2.5\text{YR}\ 5/6$.
This alphanumeric string represents a specific shade of light brown or reddish-brown soil.
- Reason (R) is true: The Munsell system specifies notation in the exact format: Hue Value/Chroma.
In the notation $2.5\text{YR}\ 5/6$:
1. Hue is $2.5\text{YR}$ (Yellow-Red, representing the dominant spectral wavelength of light).
2. Value is $5$ (representing the relative lightness or darkness of the color, ranging from 0 for black to 10 for white).
3. Chroma is $6$ (representing the relative purity or strength of the color).
- Analysis of Explanation: The Reason explains exactly why the Munsell notation is written as $2.5\text{YR}\ 5/6$ (by breaking down the notation into its constituent Hue, Value, and Chroma parameters). Hence, the Reason is the correct explanation of the Assertion.
Therefore, Both (A) and (R) are true, and (R) is the correct explanation of (A).

Step 4: Final Answer:
Both (A) and (R) are true, and (R) is the correct explanation of (A).