UPSC CSE Prelims
Question 50
In the context of modern scientific research, consider the following statements about 'IceCube', a particle detector located at South Pole, which was recently in the news :
- It is the world's largest neutrino detector, encompassing a cubic kilometre of ice.
- It is a powerful telescope to search for dark matter.
- It is buried deep in the ice.
Which of the statements given above is/are correct?
View correct answer and explanation
Correct answer: D
Correct Option: D
Explanation: IceCube is a cubic-kilometre-scale neutrino observatory embedded in Antarctic ice; it also searches for indirect signals of dark matter.
Statement/Pair-wise Analysis:
Statement/Item 1: Correct - IceCube instruments about a cubic kilometre of glacial ice at the South Pole.
Statement/Item 2: Correct - Its measurements can search for neutrinos potentially arising from dark-matter annihilation.
Statement/Item 3: Correct - Optical sensors are installed deep beneath the Antarctic surface ice.
Option-wise Analysis:
A: Incorrect - omits correct statement/items 2, 3.
B: Incorrect - omits correct statement/item 1.
C: Incorrect - omits correct statement/item 2.
D: Correct - includes all and only the correct items.