Question

The Indian Remote Sensing Satellite (IRS):
(A) Look over a fixed point at the same local time
(B) Are at a low altitude ($<$1000 km)
(C) Are used for weathering forecasting?
(D) Have large agricultural and natural resources application
(E) Provide service to telecommunications

• A. (A), (B), and (D) only
• B. (A), (B), and (C) only
• C. (A), (B), (C), and (D)
• D. (A), (D), and (E) only

Hint:

Differentiate between IRS (resource satellites) and INSAT (communication/weather) systems in Indian remote sensing programs.

Answer 1

The Correct Option is A

Step 1: IRS satellites are sun-synchronous, so they view the same location at the same local time daily, confirming (A).
Step 2: They orbit at low altitude (under 1000 km) and are built mainly for agricultural and resource applications, confirming (B) and (D).
Step 3: Weather forecasting and telecom relay belong to satellites like INSAT, not IRS, ruling out (C) and (E).
Step 4: Correct answer is (A), (B) and (D) only.