Question:
The revisit time of a Moderate Resolution Imaging Spectroradiometer (MODIS) satellite sensor is
The revisit time of a Moderate Resolution Imaging Spectroradiometer (MODIS) satellite sensor is
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Revisit time is the time a satellite takes to image the same point on the Earth again.
Updated On: Jun 16, 2026
- 6 days
- 16 days
- 4 days
- 2 days
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The Correct Option is D
Solution and Explanation
Concept:
Revisit time is the time a satellite takes to image the same point on the Earth again. Sensors with a very wide swath (the width of ground covered in one pass) can cover the whole Earth quickly and so have a short revisit time.
Step 1:
MODIS is carried on the Terra and Aqua satellites and has a very wide swath of about 2330 km. Because of this large swath it views nearly the entire surface of the Earth very frequently.
Step 2:
With such a broad swath, MODIS revisits and images the same area of the Earth roughly every one to two days. Among the given choices the matching value is 2 days.
Answer: Option (4) — 2 days.
Revisit time is the time a satellite takes to image the same point on the Earth again. Sensors with a very wide swath (the width of ground covered in one pass) can cover the whole Earth quickly and so have a short revisit time.
Step 1:
MODIS is carried on the Terra and Aqua satellites and has a very wide swath of about 2330 km. Because of this large swath it views nearly the entire surface of the Earth very frequently.
Step 2:
With such a broad swath, MODIS revisits and images the same area of the Earth roughly every one to two days. Among the given choices the matching value is 2 days.
Answer: Option (4) — 2 days.
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