Interested to Buy Any Domain ? << Click Here >> for more details...
When returning to the earth, spacecraft has a communication
blackout. The reason is:
(A) The returning spacecraft is doing so against the force
of gravity, which inter-feres with the radio waves
(B) During the re-entry period, the density of the plasma,
generated by the intense frictional heat, is so high that
the operational frequencies used for communication be come
very much less than the plasma cut-off frequency, resulting
in a total blackout
(C) Stellar X-rays attract and absorb the sound waves
(D) None of the above
- 1 Answers
- 3494 Views
- I also Faced
- E-Mail Answers
Answer / guest
( B ) During the re-entry period, the density of the plasma,
generated by the intense frictional heat, is so high that
the operational frequencies used for communication be come
very much less than the plasma cut-off frequency, resulting
in a total blackout
| Is This Answer Correct ? | 2 Yes | 0 No |
Fracisco Pelasert, a Dutch trader left an account of the reign of: (a) Akbar (b) Jahangir (c) Shahjahan (d) Aurangzeb
In which part are the carbohydrates stored as glycogen in human body ? a) Stomach b) Pancreas c) Liver d) Duodenum
India House is located in (a) New Delhi (b) Kolkata (c) London (d) New York
10 Answers College School Exams Tests, Educomp, FHG, London, LR,
Which of the following is a non-poisonous snake? 1 Krait 2 Python 3 Naja 4 Viper
What is the element required for solar energy conversion? (a) Beryllium (b) Tantalum (c) Silicon (d) Ultra pure carbon
The density of water is maximum at: (A) 1000C (B) 40C (C) 00C (D) ?40C
The ?little corporal? is the nickname of: (a) Lal Bahadur Shastri (b) Mahatma Gandhi (c) Napoleon Bonaparte (d) Bismark
Difference between credit card and debit card
4 Answers State Bank Of India SBI,
As per the announcement mode by Empowered Committee on VAT recently, the Value Added Tax will be implemented nationwide from (a) April 1, 2005 (b) May 1, 2005 (c) June 1, 2005 (d) July 1, 2005
Which of the following gives the proper order of colours? (1) red, green, blue (2) blue, green, red (3) blue, green, yellow (4) blue, yellow, green
Megasthenese was: (a) a Chinese ambassador at the court of Chandragupta (b) a Greek Philosopher (c) the envoy of Seleucus at the court of Chandragupta (d) a Greek Geometrician traveler (e) sent to India by Alexander the Great to study and learn the teachings of Buddhism
2008 Olympic Games are scheduled to be held in 1 Beijing 2 Sydney 3 New Delhi 4 London
UPSC 
