Optical fibers used in communication are developed based on
the phenomenon of
(1) refraction of light
(2) diffraction of light
(3) interference of light
(4) total internal reflection of light
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Which one of the following is popularly known as ?Lady with the Lamp?? (a) Mother Teresa (b) Florence Nightingale (c) Sarojini Naidu (d) Isabella Archer
Which of the following statements is the most suitable for explaining the development of civilization during the ancient periods of the history of Iran? (a) Language and literature made great progress in Iran (b) The Sassanid rulers welcomed scholars from different countries (c) The broad-mindedness of the rulers led to the flowering of their culture (d) The Iranians introduced marvelous network of roads
The IC?s chip in computers is made up of 1 Chromium 2 Nickel 3 Iron oxide 4 Silicon
Feeding of colostrums is important for young calves because 1 It is tasty 2 It contains iron 3 It contains antibodies 4 It supplies growth proteins
The principal mode of transport of goods freight in the country is: (A) By air (B) By rail (C) By road (D) By inland waterways
The Central zone won the Duleep Trophy for cricket with nine wickets by defeating Which of the following teams? 1 South Zone 2 East Zone 3 West zone 4 North Zone
Where was the first university in modern India founded? 1 Bombay 2 Calcutta 3 Lahore 4 Madras
JIT is a technique that is related to: (A) efficient management of plant operations (B) efficient management of inventories (C) efficient management of personnel (D) efficient management of finances
Of the following which is not an elementary particle ? (1) Electron (2) Alpha-particle (3) Proton (4) Neutron
Raya Darpan, a book on classical music was translated into Parasian during the time of (1) Iltutmish (2) Aladdin Khilji (3) Ghiyasuddin Tughlaq (4) Feroz Tughalaq
C. funk?s name has been associated with the research of which of the following? (a) Vitamins (b) Proteins (c) Minerals (d) Carbohydrates
A carbon based ring for correcting which of the following deformities has been developed recently by the National Physical Laboratory, Delhi? 1 Arthritis 2 Asthma 3 Polio 4 None of these