Question:
Which of the following band is better for delineating water bodies?
Which of the following band is better for delineating water bodies?
Show Hint
Remember that water absorbs NIR energy like a sponge, making it stand out starkly from land in NIR images.
Updated On: May 6, 2025
- \( \text{Blue band} \)
- \( \text{Red band} \)
- \( \text{Green band} \)
- \( \text{Near-infrared band} \)
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
The near-infrared (NIR) band is generally considered the best for delineating water bodies in satellite imagery. Water strongly absorbs NIR radiation, resulting in very low reflectance values and thus appearing very dark in NIR imagery. This strong contrast between water and land makes it easy to map and delineate water bodies. Blue and green bands have some penetration into water, and the red band is also absorbed by water, but the absorption is most pronounced in the NIR region.
Was this answer helpful?
0
0
Top Questions on Remote Sensor
- SDI stands for
- Spectral region of electromagnetic radiation which passes through atmosphere without much attenuation is known as _________.
- What does spectral resolution refer to in remote sensing?
- The Copernicus program for Earth Observation is run by ________.
- The European Space Agency's primary Earth observation program is known as _______.
View More Questions
Questions Asked in AP PGECET exam
- Let \( z \) be a complex variable and \( C : |z| = 3 \) be a circle in the complex plane. Then,\[ \oint_C \frac{z^2}{(z - 1)^2(z + 2)} \, dz = \]
- AP PGECET - 2025
- Complex numbers
- If \( \vec{F}(x, y, z) = 3x^2y\,\hat{i} + 5y^2z\,\hat{j} - 8xyz\,\hat{k} \) is a continuously differentiable vector field, then the curl of \( \vec{F} \) at (1,1,1) is ...............
- AP PGECET - 2025
- Calculus
- Let \( f(x) = x^3 - \dfrac{9}{2}x^2 + 6x - 2 \) be a function defined on the closed interval \([0, 3]\). Then, the global maximum value of \( f(x) \) is ...............
- AP PGECET - 2025
- Calculus
- For a stable closed loop system, the gain at phase crossover frequency should always be:
- AP PGECET - 2025
- Control Systems
- If the matrix \[ A = \begin{pmatrix} 3 & -1 & 1 \\ -1 & 5 & -1 \\ 1 & -1 & 3 \end{pmatrix} \] has three distinct eigenvalues, and one of its eigenvectors is \[ \begin{pmatrix} 1 \\ 0 \\ -1 \end{pmatrix}, \] then which of the following can be another eigenvector of \( A \)?
- AP PGECET - 2025
- Linear Algebra
View More Questions