Allied & ICAR Exam Bank • ALLIED_2956 MCQ • 1 Mark

Section 2: Farm Machinery

Farm Machinery

Subtopic: Equipment for precision agriculture

Question Statement:

In precision crop sensing, the Normalized Difference Vegetation Index (NDVI) is computed from reflectance in which two optical wavebands?

Options:

  • (A) Near-Infrared (NIR) and Red (R): $\text{NDVI} = \frac{\text{NIR} - \text{R}}{\text{NIR} + \text{R}}$
  • (B) Blue and Ultraviolet
  • (C) Thermal Infrared and Green
  • (D) Microwave and Radio

Answer Key:

A

Step-by-Step Solution & Explanation

Healthy chlorophyll strongly absorbs Red light while spongy mesophyll strongly reflects NIR light; NDVI normalizes this contrast.
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