Q. Consider the following statements:
1.Cherenkov radiation occurs when charged particles travel through a dielectric medium at speeds greater than the phase velocity of light in that medium.
2.The Major Atmospheric Cherenkov Experiment (MACE) telescope is designed to observe visible light emitted by stars in distant galaxies.
Which of the statement(s) given above is/are correct?
Answer: A
Notes:
Explanation –
Statement 1 is correct. Cherenkov radiation is emitted when a charged particle, such as an electron, moves through a dielectric medium (e.g., water or air) faster than the phase velocity of light in that medium. This phenomenon produces a characteristic blue glow.
Statement 2 is incorrect. The MACE telescope is designed to detect Cherenkov radiation produced by high-energy gamma rays interacting with the Earth’s atmosphere. Its primary goal is to study cosmic gamma rays and phenomena like supernovae, black holes, and dark matter. It is the world’s highest imaging Cherenkov telescope. It has a 21-meter-wide dish, making it the largest in Asia and the second-largest globally.
Source: The Hindu
