With reference to the NASA–ISRO Synthetic Aperture Radar (NISAR) satellite, consider the following statements: 1. NISAR is the first Earth-observation satellite jointly developed by NASA and ISRO. 2. It is placed in a geostationary orbit to enable continuous imaging of the same region. 3. It contains dual-frequency Synthetic Aperture Radar (L-band by NASA and S-band by ISRO). How many of the above statements are correct? |ForumIAS

[A] Only one

[B] Only two

[C] All three

[D] None

Answer: B

Notes:

Explanation:

Statement 1 is correct: NISAR is the first joint Earth-observation mission of NASA and ISRO.
Statement 2 is incorrect: NISAR is not placed in geostationary orbit. It operates in Low Earth Orbit (LEO) in a Sun-synchronous polar orbit, not geostationary orbit.
Statement 3 is correct:NISAR uses a dual-frequency SAR system: the L-band developed by NASA and the S-band developed by ISRO.

Source- TH