1606: The average speed of a train in the onward journey is 25% more than that of the return journey. The train halts for one hour on reaching the destination. The total time taken for the complete to and fro journey is 17 hours covering a distance of 800 km. The speed of the train in the onward journey is
(a) 45 km per hour
(b) 47.06 km per hour
(c) 50.00 km per hour
(d) 56.25 km per hour
1607: When light enters a closed room through a small hole in the door, the image of an outside building appears as inverted on the opposite wall. This is because:
(a) The hole acts as a convex lens
(b) Light takes curvature at the edges of the hole
(c) Of rectilinear propagation of light
(d) The hole acts as a concave lens
1608: In the context of polity, which one of the following would you accept as the most appropriate definition of liberty?
(a) Protection against the tyranny of political rulers
(b) Absence of restraint
(c) Opportunity to do whatever one likes
(d) Opportunity to develop oneself fully
1609: Which one of the following scripts of ancient India was written from right to left?
(a) Brahmi
(b) Nandnagari
(c) Sharada
(d) Kharoshti
1610: What is the average distance (approximate) between the Sun and the Earth?
(A) 150x10 6km
(B) 100x10 5km
(C) 110x10 6km
(D) 70x10 5km