3556: Suppose a rocketship is receding from the earth at a speed of 2/10th the velocity of light. A light in the rocketship appears blue to the passengers on the ship. What colour would it appear to an observer on the earth?
(a) Blue
(b) Orange
(c) Yellow
(d) Yellow-orange
3557: The standard time of the following countries is ahead or behind Greenwich Mean Time depending on whether they are east or west of the longitude passing through Greenwich :
I. Cuba
II. Greece
III. Iraq
IV. Costa Rica
V. Japan
Which one of the following sequential orders gives the correct arrangement of the countries according to their standard time from ahead to behind GMT?
(a) V, III, II, I, IV
(b) II, IV, I, III, V
(c) IV, I, III, II, V
(d) III, V, IV, I, II
3558: An aeroplane takes off from 30° North Latitude, 50° East Longitude, and lands at the opposite end of the earth. Where does it land ?
(a) 30° North Lat., 50° West Long
(b) 30° South Lat., 50° West Long
(c) 50° North Lat., 30° West Long
(d) 30° South Lat., 130° West Long
3559: Consider the following which can be found in the ambient atmosphere:
1. Soot
2. Sulphur hexafluoride
3. Water vapour
Which of the above contribute to the warming up of the atmosphere ?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
3560: Lucerne is a:
(a) Foliage crop
(b) Cereal crop
(c) Fruit crop
(d) Fibre crop