Q. With reference to Giant Metrewave Radio Telescope (GMRT) consider the following statements:
1.The GMRT is designed to detect and capture visible light.
2.The GMRT employs a technique called radio interferometry, which combines signals received by multiple antennas to create a virtual telescope with a size equivalent to the maximum separation between the antennas.
3.The GMRT is operated by National Centre for Radio Astrophysics (NCRA).
How many of the above statements are correct?
Answer: B
Notes:
Explanation –
Statement 1 is incorrect. Unlike optical telescopes that detect visible light, the GMRT is designed to capture and study radio frequencies ranging from 150 MHz to 1.5 GHz.
Statement 2 and 3 are correct. The GMRT employs a technique called radio interferometry, which combines signals received by multiple antennas to create a virtual telescope with a size equivalent to the maximum separation between the antennas. The GMRT is operated by National Centre for Radio Astrophysics (NCRA).
Source: ForumIAS
