28 Nov 2023: UPSC Exam Comprehensive News Analysis

28 November 2023 CNA
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TABLE OF CONTENTS

A. GS 1 Related
B. GS 2 Related
C. GS 3 Related
ECONOMY
1. Can dollarisation save an economy?
D. GS 4 Related
E. Editorials
INTERNATIONAL RELATIONS
1. The many grave risks confronting the world today
INDIAN POLITY
1. It’s time to revamp the structure of the Supreme Court 
F. Prelims Facts
1. Fibre optic cables: its origins, working and different functions
G. Tidbits
1. ILO report urges countries to strengthen safety net
2. Paul Lynch wins 2023 Booker Prize for Prophet Song
H. UPSC Prelims Practice Questions
I. UPSC Mains Practice Questions

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F. Prelims Facts

1. Fibre optic cables: its origins, working and different functions

Syllabus: GS 3- Science and Technology

Prelims: About Fibre Optical Cables

Origins and Development of Optical Fibres

  • Physicist Charles Kao’s groundbreaking suggestion in the 1960s led to the development of glass fibres for telecommunication.
  • Jean-Daniel Colladon and Jacques Babinet’s early experiments in the 19th century laid the foundation for light-guiding through transparent media.
  • The term ‘fibre optics’ was coined by Narinder Singh Kapany in the 1950s, marking a significant leap in fibre development.

How Optical Fibres Work

  • Light, an electromagnetic wave, undergoes total internal reflection within glass fibres, allowing the guided transmission of signals.
  • A fibre optic communication system comprises a transmitter, optical fibre, and receiver, enabling high-speed data transmission with minimal signal loss.
  • Fibre cables are insensitive to external perturbations, making them superior to radio or copper-cable-based communication.

Evolution of Fibre Optic Cables

  • Early optical fibres were used in medicine and defence applications but were limited in long-distance transmission.
  • Harold Hopkins and Narinder Singh Kapany’s work in 1954 marked progress, and Lawrence E. Curtiss’s glass-clad fibres in 1956 paved the way for extended data transmission.
  • Theodore Maiman’s invention of the laser in 1960 further enhanced optical communication capabilities.

Charles Kao’s Contribution and Improved Fibre Manufacturing

  • In 1966, Kao and colleagues identified impurities in glass as the cause of signal attenuation, leading to the development of high-purity fused silica fibres.
  • Fibre-drawing techniques, involving the preparation of a preform and drawing it into a thin fibre, became the standard manufacturing method.
  • Modern optical fibres have significantly reduced signal loss, with less than 0.2 dB/km.

Current Applications and Future Prospects

  • Fibre optics technology finds applications in telecommunication, medical science, laser technology, and sensing.
  • The Indian government’s National Mission on Quantum Technologies and Applications, announced in the 2020 Union Budget, reflects a commitment to advancing fibre optic networks.
  • Fibre optic communication, coupled with quantum optics, is poised to enter a new era with expanded possibilities.

G. Tidbits

1. ILO report urges countries to strengthen safety net

  • According to a report by the International Labour Organization (ILO), nearly 30 lakh workers die globally each year due to work-related accidents and diseases.
  • Over 63% of these deaths occur in the Asia-Pacific region.
  • Exposure to long working hours (55 hours or more per week) is identified as the leading cause of work-related deaths, contributing to almost 7.45 lakh fatalities in 2016.
  • The three most hazardous sectors globally are mining and quarrying, construction, and utilities.
  • The report highlights that 79 out of 187 member countries have ratified the ILO Occupational Safety and Health Convention (No. 155), and 62 countries have ratified the Promotional Framework for Occupational Safety and Health Convention, 2006 (No. 187), but India has not ratified either convention.
  • The report recommends five categories of “Fundamental Principles and Rights at Work” to ensure safety and health at work. These are,
    • freedom of association and the effective recognition of the right to collective bargaining
    • elimination of all forms of forced or compulsory labour
    • abolition of child labour
    • elimination of discrimination in respect of employment and occupation
    • a safe and healthy working environment

2. Paul Lynch wins 2023 Booker Prize for Prophet Song

  • The 2023 Booker Prize for Fiction has been awarded to Irish author Paul Lynch for his novel “Prophet Song.”
  • “Prophet Song” is a dystopian work set in a near-future version of Ireland, depicting the struggles of a mother of four trying to save her family from totalitarianism.
  • The Booker Prize comes with a £50,000 cash prize and is one of the most prestigious literary awards.
  • The novel captures the social and political anxieties of the current moment and is praised for its emotional storytelling.
  • The Booker Prize is open to fiction works by writers of any nationality, written in English and published in the UK or Ireland.
  • The Booker Prize was first awarded in 1969 and has featured acclaimed authors such as Salman Rushdie, Margaret Atwood, and Hilary Mantel among its winners.

H. UPSC Prelims Practice Questions

Q1. Consider the following statements regarding optical fibres:
  1. Optical fibres are typically made of thick cylindrical strands of glass.
  2. Light travels through optical fibres almost at the speed of sound.
  3. Total internal reflection is a phenomenon crucial for guiding light within optical fibres.

How many of the statements given above are correct?

  1. Only one  
  2. Only two  
  3. All three  
  4. None
CHECK ANSWERS:-

Answer: b

Explanation: Optical fibres are made of thin cylindrical strands of glass, and light travels through them almost at the speed of light. Total internal reflection is crucial for guiding light within optical fibres.

Q2. Consider the following statements about rat hole mining:
  1. Rat hole mining involves extracting coal from narrow, horizontal seams using small pits.
  2. It is known for its adherence to strict safety measures, ensuring worker protection and environmental conservation.
  3. It can cause land degradation, deforestation, and water pollution.

How many of the statements given above are incorrect?

  1. Only one  
  2. Only two  
  3. All three  
  4. None
CHECK ANSWERS:-

Answer: a

Explanation: Rat hole mining involves extracting coal from narrow seams using small pits. However, it poses significant safety and environmental hazards due to the lack of regulations.

Q3. Who amongst the following authors won the 2023 Booker Prize for Fiction for 
his/her novel ‘Prophet Song’?
  1. Salman Rushdie
  2. Paul Lynch
  3. Geetanjali Shree
  4. Margaret Atwood
CHECK ANSWERS:-

Answer: b

Explanation: Irish author Paul Lynch won the 2023 Booker Prize for his novel ‘Prophet Song’, which is a dystopian work set in an Ireland that descends into tyranny.

Q4. With reference to the International Labour Organization (ILO), which of the 
following statements is/are correct?
  1. The ILO is a tripartite U.N. agency, founded in 1919, bringing together governments, employers, and workers of member States to promote decent work.
  2. India is a founding member of the ILO and has ratified six out of the eight core/fundamental ILO conventions.

Select the correct answer using the code given below:

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2
CHECK ANSWERS:-

Answer: c

Explanation: The ILO is a tripartite U.N. agency, and India, a founding member, has ratified six out of the eight core/fundamental ILO conventions.

Q5.Consider the following statements about dollarisation:
  1. It can address hyperinflation by disconnecting rising prices from the domestic money supply.
  2. Dollarisation encourages economies to focus on export success and attract foreign capital, fostering economic growth.
  3. A potential drawback of dollarisation is the loss of policy leverage, as monetary policy can no longer control the money supply.

How many of the statements given above are incorrect?

  1. Only one  
  2. Only two  
  3. All three  
  4. None
CHECK ANSWERS:-

Answer: d

Explanation: Dollarisation addresses hyperinflation, promotes export focus and foreign investment, but it comes with the drawback of losing policy leverage.

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