Question

Given below are two statements Statement-I: The variations in the tone depend upon the orientation of incoming radiations and surface properties. Statement-II: The smooth and dry object surfaces reflect less energy in comparison to the rough and moist surfaces. The correct answer is

• A. Only statement-I is correct
• B. Only statement-II is correct
• C. Both statement-I and statement-II are correct
• D. Both statement-I and statement-II are incorrect

Hint:

Tone in a remote sensing image is the relative brightness recorded for an object, and it depends on how much energy the surface reflects toward the sensor, which is governed by the geometry of the incoming radiation and

Answer 1

The Correct Option is A

Concept:
Tone in a remote sensing image is the relative brightness recorded for an object, and it depends on how much energy the surface reflects toward the sensor, which is governed by the geometry of the incoming radiation and the surface characteristics.

Step 1:
Statement-I is correct because tonal variation indeed depends on the orientation (angle) of the incoming radiation and on the reflecting properties of the surface.

Step 2:
Statement-II is incorrect. Smooth, dry surfaces generally reflect more energy toward the sensor (acting like mirrors), whereas rough and moist surfaces scatter and absorb more energy and so reflect less, which is the opposite of what the statement claims.

Answer: Option (1) — Only statement-I is correct.