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- Question
What was the active medium used in the first working laser ever constructed?
Options- A. A diamond block
- B. Helium-neon gas
- C. A ruby rod
- D. Carbon dioxide gas
- Correct Answer
- A ruby rod
ExplanationTheodore Maiman built the first working laser using a ruby rod while working at Hughes Research Laboratories in Malibu, California. It lased for the first time on May 16, 1960. - 1. Another name for a computer chip is ...
Options- A. Execute
- B. Micro chip
- C. Microprocessor
- D. Select Discuss
- 2. What is the length of each stump in the cricket?
Options- A. 35 inches
- B. 22 inches
- C. 28 inches
- D. 33 inches Discuss
- 3. Which city is known as 'Electronic City of India'?
Options- A. Mumbai
- B. Hyderabad
- C. Guragon
- D. Bangalore Discuss
- 4. The various types of plate convergence is
- oceanic-oceanic convergence
- oceanic-continental convergence
- continental-continental convergence
Options- A. I, II
- B. II, III
- C. I, III
- D. All of the above Discuss
- 5. '.TXT' extension refers usually to what kind of file?
Options- A. Text File
- B. Image file
- C. Audio file
- D. Adobe Acrobat file Discuss
- 6. Euclid was
Options- A. Greek mathematician
- B. Contributor to the use of deductive principles of logic as the basis of geometry
- C. Propounded the geometrical theorems
- D. All of the above Discuss
- 7. In 1983, which person was the first to offer a definition of the term 'computer virus'?
Options- A. McAfee
- B. Smith
- C. Cohen
- D. Norton Discuss
- 8. Resurgent India Bonds were issued in US dollar, Pound Sterling and
Options- A. Japanese Yen
- B. Deutsche Mark
- C. Euro
- D. French Franc Discuss
- 9. The highest first wicket partnership in Test Match Cricket was between two Indians: one is V.Mankad, who is the other?
Options- A. Subhash Gupte
- B. Sunil Gavaskar
- C. Pankaj Roy
- D. Chetan Chauhan Discuss
- 10. The Economic and Social Commission for Asia and Pacific (ESCAP) is located at
Options- A. Manila
- B. Singapore
- C. Kuala lumpur
- D. Bangkok Discuss
More questions
Correct Answer: Micro chip
Correct Answer: 28 inches
Correct Answer: Bangalore
Correct Answer: All of the above
Correct Answer: Text File
Correct Answer: All of the above
Correct Answer: Cohen
Explanation:
1983 Fred Cohen, while working on his dissertation, formally defines a computer virus as 'a computer program that can affect other computer programs by modifying them in such a way as to include a (possibly evolved)copy of itself.'
Correct Answer: Deutsche Mark
Correct Answer: Pankaj Roy
Correct Answer: Bangkok
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