Question

The Khosla formula gives runoff as a function of:
A. Slope
B. Rainfall
C. Soil Texture
D. Temperature
E. Humidity
Choose the most appropriate answer from the options given below:

• A. A and E only
• B. B and D only
• C. A and C only
• D. B only

Hint:

Khosla formula: \(R = P - 4.5T/100\).
It is used for monsoon runoff estimation.
Temperature and rainfall are the key parameters.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
This question tests knowledge of the Khosla formula for runoff estimation.

Step 2: Detailed Explanation:
The Khosla formula is an empirical method for estimating runoff from rainfall.
It is given by:
\[ R = P - \frac{4.5 \times T}{100} \] where:
R = Runoff (cm),
P = Rainfall (cm),
T = Mean temperature (°C).
Thus, runoff depends on Rainfall (B) and Temperature (D).
Slope, soil texture, and humidity are not directly part of the Khosla formula.
Therefore, the function includes B and D.

Step 3: Final Answer:
Thus, the Khosla formula gives runoff as a function of rainfall and temperature, which corresponds to option (B).
[0.5cm]