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GAT Subject RS & GIS Test Preparation for Nust Phd Admission

December 2, 2025 by ourmcqs

Welcome to your GAT Subject RS & GIS Test Preparation for Nust Phd Admission

1. Mie scattering mainly affects:

A) Gas molecules

B) Large dust and water droplets

C) Air molecules only

D) Short UV waves only

None

2. A true color composite (TCC) uses which bands?

A) NIR–Red–Green

B) Blue–Green–Red

C) SWIR–NIR–Red

D) Panchromatic only

None

3. In Landsat imagery, a false color composite (FCC) is usually made with:

A) Bands 4-3-2

B) Bands 3-2-1

C) Bands 5-4-3

D) Bands 7-5-3

None

4. Which of the following has the highest spatial resolution?

A) MODIS (250 m)

B) Sentinel-2 (10 m)

C) Landsat-8 (30 m)

D) WorldView-3 (0.3 m)

None

5. Sun-synchronous orbit ensures:

A) Constant local solar time for each pass

B) Satellite passes every 24 hours

C) Random orbit times

D) Polar geostationary orbit

None

6. The temporal resolution of Landsat-8 is:

A) 7 days

B) 8 days

C) 10 days

D) 16 days

None

7. The ground sampling distance (GSD) mainly affects:

A) Radiometric accuracy

B) Spatial detail

C) Temporal frequency

D) Spectral width

None

8. Which unit measures radiance

A) Watt m⁻² sr⁻¹ µm⁻¹

B) Joule m²

C) Kelvin

D) Watt m⁻¹

None

9. In a satellite image, dark areas in NIR usually represent:

A) Vegetation

B) Bare soil

C) Water bodies

D) Urban features

None

10. Orthorectification is performed to: represent:

A) Enhance color contrast

B) Correct terrain distortions

C) Remove haze

D) Convert radiance to reflectance

None

Time’s up

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GAT Subject for RS & GIS

GAT Subject Test RS & GIS Preparation 2025

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