Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
Options: 1.8 km, 0.15 km, 2.2 km, 0.20 km, 2.8 km, 0.25 km, 3.3 km, 0.30 km
Exposure to sunlight helps a person improve his health because
Options: the infrared light kills bacteria in the body, resistance power increases, the pigment cells in the skin get stimulated and produce a healthy tan, the ultraviolet rays convert skin oil into Vitamin D
The land-sea distribution or the positions of the world's continents and major oceans influences
Options: the major pressure belts that develop from the general circulation of the atmosphere, the development of the mid-latitude cyclonic depressions, at the convergence zone between polar and subtropical air masses, both (a) and (b), None of the above
Options: December 27, 1911 during the Indian National Congress Session at Calcutta, January 24, 1950 by the Constituent Assembly of India, January 26, 1959 by the Government of India, None of the above
Options: international agreement signed in 1947 between non-communist nations with the object of encouraging international trade unobstructed by tariff barriers, agreement which seeks to achieve its aim by arranging and encouraging bargaining with trade concessions between members, Both option A and B, None of the above