Remote Sensing MCQs (with Answers)
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Which of the following is the main source of energy for remote sensing?
a) Sound waves
b) Radar
c) Sunlight ☑️
d) Microwave -
In remote sensing, what does the term 'Resolution' refer to?
a) Signal strength
b) Energy level
c) Detail level ☑️
d) Frequency range -
Which type of resolution determines the smallest object that can be detected by a sensor?
a) Temporal
b) Spectral
c) Radiometric
d) Spatial ☑️ -
Which of the following is a passive remote sensing system?
a) LIDAR
b) Radar
c) Thermal camera
d) Camera onboard a satellite ☑️ -
Which satellite was India’s first remote sensing satellite?
a) INSAT-1A
b) IRS-1A ☑️
c) Aryabhata
d) Bhaskara-I -
What is the spectral range of visible light used in remote sensing?
a) 0.4 – 0.7 µm ☑️
b) 0.7 – 1.1 µm
c) 1.1 – 3.0 µm
d) 3.0 – 5.0 µm -
Which of the following is a microwave remote sensing satellite?
a) IRS-P6
b) Cartosat
c) RISAT ☑️
d) Oceansat -
Which is a main advantage of active remote sensing?
a) Requires sunlight
b) Can work at night ☑️
c) Less expensive
d) Needs clear atmosphere -
The term “Swath” in remote sensing refers to:
a) Satellite path
b) Image brightness
c) Ground area covered ☑️
d) Sensor altitude -
Which of the following is a geostationary satellite?
a) INSAT ☑️
b) IRS
c) Cartosat
d) SPOT
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Which sensor is used in Landsat satellites?
a) AVHRR
b) TM ☑️
c) LISS
d) SAR -
Remote sensing involves interaction of sunlight with:
a) Atmosphere only
b) Earth surface only
c) Both ☑️
d) None -
Which electromagnetic radiation has the longest wavelength used in remote sensing?
a) Infrared
b) X-rays
c) Microwave ☑️
d) Ultraviolet -
Which satellite provides data used for vegetation analysis?
a) SPOT
b) IRS
c) MODIS ☑️
d) INSAT -
What is NDVI in remote sensing used for?
a) Soil moisture
b) Vegetation monitoring ☑️
c) Urban planning
d) Water mapping -
Which Indian satellite is specifically designed for ocean studies?
a) INSAT-3A
b) RISAT
c) Cartosat
d) Oceansat ☑️ -
LIDAR technology uses:
a) Microwaves
b) Infrared waves
c) Laser beams ☑️
d) Visible light -
Which type of resolution indicates the number of spectral bands?
a) Spatial
b) Spectral ☑️
c) Temporal
d) Radiometric -
Which ISRO satellite provides high-resolution images for urban planning?
a) Cartosat ☑️
b) Oceansat
c) INSAT
d) Megha-Tropiques -
Temporal resolution refers to:
a) No. of spectral bands
b) Time between data acquisitions ☑️
c) Pixel size
d) Bit depth
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Which sensor provides night-time imaging?
a) PAN
b) LISS
c) SAR ☑️
d) TM -
Radiometric resolution refers to:
a) Pixel size
b) Brightness sensitivity ☑️
c) Bandwidth
d) Swath width -
Which instrument uses microwave for earth observation?
a) Thematic Mapper
b) Radiometer
c) SAR ☑️
d) LISS-III -
Which Indian mission monitors agriculture and drought?
a) IRS-1D
b) Cartosat
c) ResourceSat ☑️
d) Kalpana -
What is the purpose of ground truthing in remote sensing?
a) Satellite launch
b) Verification of image data ☑️
c) Software development
d) Data encryption -
Which remote sensing technique is best for mineral exploration?
a) Radar
b) LIDAR
c) Hyperspectral imaging ☑️
d) Panchromatic imaging -
Which ISRO satellite is used for disaster management?
a) Cartosat-2
b) INSAT-3D ☑️
c) RISAT-2B
d) Oceansat-2 -
Who is considered the father of remote sensing?
a) Galileo
b) Gaspard Felix Tournachon (Nadar) ☑️
c) Aryabhata
d) Newton -
In thermal imaging, the sensor detects:
a) Visible light
b) Reflected IR
c) Emitted radiation ☑️
d) UV light -
Which of the following is not a satellite sensor?
a) LISS
b) PAN
c) ATM ☑️
d) TM