Questions

The least penetrating power ray is Alpha rays.

Haryana state government has recently decided to rename Child Care Institutes as Jagannath Ashrams.

Since, the starting statement carries a subject; S will be the first statement as it talked about the world’s fastest computers. The next statement describes the initial use of the same and the statement that follows states the new uses of the computers as environmental tools. Thus SQRP is the correct sequence and thus form a coherent paragraph.

The correct formation would be, ‘The world’s fastest computers initially conceived for military purposes are finding various new uses as environmental tools.

In an ideal gas, at any particular time, different particles in the gas have different speeds and hence different kinetic energies. This assumption is reasonable because as the particles collide, we expect their speed to change. Even if initial speed of all the particles was same, the molecular collisions will disrupt this uniformity.Hence statement 1 is incorrect and 2 is correct.

Kepler’s  laws  of  planetary  motion state  that  (a)  All  planets  move  in elliptical orbits with the Sun at one of  the  focal  points  (b)  The  radius vector  drawn  from  the  sun  to  a planet  sweeps  out  equal  areas  in equal  time  intervals.  This  follows from  the  fact  that  the  force  of gravitation on the planet is central and  hence  angular  momentum  is conserved.  (c)  The  square  of  the orbital   period   of   a   planet   is proportional  to  the  cube  of  the semi  major  axis  of  the  elliptical orbit of the plane.