Assertion (A) : Remote sensing is defined as the science and art of acquiring data about earth's objects from a distance without physical contact.
Reason (R) : The collection of data is only conducted by means of remote sensors installed in aircraft and satellite.
Codes:
Assertion (A) Analysis
The Assertion (A) states that Remote sensing is the science and art of acquiring data about Earth's objects from a distance without physical contact. This definition accurately describes the fundamental concept of remote sensing, which involves collecting information about an object or phenomenon without being in direct physical contact with it.
Therefore, Assertion (A) is true.
Reason (R) Analysis
The Reason (R) claims that data collection in remote sensing is only conducted using sensors installed in aircraft and satellites. This statement is too restrictive. While aircraft and satellites are common platforms for remote sensing, data can also be collected from other sources, including ground-based sensors (like weather stations or ground-based LiDAR) and even drones or balloons. The word "only" makes the statement inaccurate.
Therefore, Reason (R) is false.
Conclusion
Based on the analysis, Assertion (A) is true, and Reason (R) is false.
This corresponds to Option 3: (A) is true, but (R) is false.
Important Questions from Remote Sensing - Teaching
- Given below are two statements, one labelled as Assertion (A) and other labelled as Reason (R). Select your answer from the codes given below :
Assertion (A): Change detection in remote sensing is the process of identifying differences in the state of an object or phenomenon
Reason (R) : The use of GIS facilitates for digital change detection
Codes: - Most suitable spectral region for studying Urban Heat Island (UHI) effect is :
- Delineation of water - nonwater boundary in remote sensing is best done using :
- DEM (Digital Elevation Model) is best represented using :
Which form of scattering in visible region in the atmosphere is not dependent on wavelength ?
(a) Rayleigh
(b) Mie
(c) Non-Selective
Choose the correct answer :
