What is the primary satellite sensor type used in multispectral remote sensing?
A. Thermal sensors
B. Radar sensors
C. Optical sensors
D. LiDAR sensors
Answer: Option C
Solution (By Examveda Team)
Optical sensors detect reflected sunlight in multiple wavelengths, enabling multispectral imaging useful in geological mapping and vegetation studies.Thermal sensors detect heat, radar uses microwaves, and LiDAR uses laser pulses.This Question Belongs to Geological Engineering >> Remote Sensing And GIS In Geological Engineering
What is the primary principle behind remote sensing?
A. Collecting data by direct contact
B. Observing Earth from a distance using sensors
C. Drilling to collect soil samples
D. Using underground radar
Which of the following is an active remote sensing technique?
A. Aerial photography
B. LiDAR (Light Detection and Ranging)
C. Thermal infrared imaging
D. Multispectral scanning
Which GIS component is responsible for spatial data analysis?
A. Hardware
B. Software
C. Data
D. People
In remote sensing, what does spectral resolution refer to?
A. Size of the area covered
B. Ability to distinguish between different wavelengths
C. Number of pixels in the image
D. Time between image acquisitions
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