Narinder Singh Kapany , whose 100th birth anniversary falls on 31 October, is known as the father of which technology?
- A.Fiber optics
- B.Semiconductors
- C.Radio astronomy
- D.Nuclear medicine
Correct answer
Explanation
The correct answer is fiber optics. Narinder Singh Kapany is known across the world as the Father of Fiber Optics, and his 100th birth anniversary falls on 31 October. He was born in the Moga district of Punjab, and his advanced research into carrying light forward through very thin fibers gave a new direction to the field of communication. The era of the internet and of digital communication in which we live is hard to imagine without the fiber optics he pioneered, which is why the Prime Minister asked young people to read about scientists such as him and draw inspiration from them. The other options name fields with which he is not associated. He is not called the father of semiconductors, nor of radio astronomy, nor of nuclear medicine. Note also that 31 October carries a second observance, Ekta Diwas, the birth anniversary of Sardar Vallabhbhai Patel, when a Run for Unity is organised across the country.
Read the full article: Mann Ki Baat 139th Episode Flags 50 Crore e-Sanjeevani Calls
Practice Questions
Which episode of Mann Ki Baat was broadcast on 25 October 2026?
- A.129th
- B.135th
- C.139th
- D.141st
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Mann Ki Baat is the monthly radio address of the Prime Minister, and the edition broadcast on 25 October 2026 was its 139th.
Read the full explanation →The Sudha Gopalakrishnan Brain Centre, which aims to map 100 human brains in 3D, has been set up at which institution?
- A.IISc Bengaluru
- B.IIT Madras
- C.AIIMS New Delhi
- D.IIT Bombay
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The Prime Minister inaugurated the Sudha Gopalakrishnan Brain Centre there during his visit to Chennai earlier in the month, and he spoke about it in the 139th episode of Mann Ki Baat.
Read the full explanation →Bhai Parmanand, whose 150th birth anniversary falls on 4 November, was a founding member of which organisation?
- A.Ghadar Party
- B.Forward Bloc
- C.Anushilan Samiti
- D.Hindustan Socialist Republican Association
Show answer
His 150th birth anniversary falls on 4 November. His ideals drew heavily on his close association with the Arya Samaj, for whose work he travelled to South Africa in the opening years of the twentieth century and met Mahatma Gandhi there; he also worked among the Girmitiya community in Guyana…
Read the full explanation →Railway projects of what approximate value did the Railway Minister say are under way in Madhya Pradesh?
- A.About ₹10,000 crore
- B.About ₹50,000 crore
- C.About ₹1 lakh crore
- D.About ₹5 lakh crore
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Speaking at the inauguration, the Railway Minister said work of roughly that value is in progress in Madhya Pradesh, spread over new lines, doubling, third and fourth lines and gauge conversion on stretches such as Lalitpur–Singrauli, Satna–Rewa, Katni–Singrauli, Jabalpur–Gondia, Bina–Bhopal–Itarsi, Ratlam–Khandwa and Indore–Dahod.
Read the full explanation →What is the approximate cost of the new Satna–Devendranagar railway line?
- A.About ₹1,070 crore
- B.About ₹873 crore
- C.About ₹541 crore
- D.About ₹1,339 crore
Show answer
The Satna–Devendranagar line measures roughly 53 km and was built at that cost, the last 8 km between Phulwari and Devendranagar completing it.
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