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Q30·GS Paper 1 · Prelims 2015

IceCube particle detector

S&TAstronomy and particle physics researchStatement-basedMediumCurrent-affairs-linked

Question

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:

1It is the world's largest neutrino detector, encompassing a cubic kilometre of ice.
2It is a powerful telescope to search for dark matter.
3It is buried deep in the ice.

Which of the statements given above is/are correct?

  1. 1.

    It is the world's largest neutrino detector, encompassing a cubic kilometre of ice.

  2. 2.

    It is a powerful telescope to search for dark matter.

  3. 3.

    It is buried deep in the ice.

Options

a

1 only

b

2 and 3 only

c

1 and 3 only

Answer
d

1, 2 and 3

Explanation

IceCube is indeed the world's largest neutrino detector, encompassing a cubic kilometer of Antarctic ice with embedded sensors (Statement 1 is correct). The detector is buried deep within the Antarctic ice sheet, with sensors positioned at various depths (Statement 3 is correct). However, IceCube is specifically designed to detect high-energy neutrinos from cosmic sources, not to search for dark matter directly (Statement 2 is incorrect). While neutrino detection has some connection to dark matter research, IceCube's primary function is neutrino astrophysics, not dark matter search. The facility became operational in 2009 and has made important discoveries in neutrino astrophysics. > IceCube detects cosmic neutrinos through Antarctic ice instrumentation, not dark matter. Answer: (c).

Question details

Year

2015

Paper

GS Paper 1

Question

Q30

Subject

Science & Technology

Sub-topic

Astronomy and particle physics research

Type

Statement-based

Difficulty

Medium

Nature

Current-affairs-linked

Source hint

Current Affairs 2014 - Science & Technology

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