Question

(d) go on decreasing
23. If a tunnel is dug along the diameter of earth and a piece of
stone is dropped into it, then the stone will
(a) come out of the another end of the earth and will escape
out in space
(b) come to rest at the centre of the earth
(c) start oscillating about the centre of the earth
(d) stop at another end of the earth​

Answer 1

Answer:

In the world of tiny computing, the engineers at the University of Michigan just outdid IBM. The university on Thursday said its engineers have produced a computer that's 0.3 mm x 0.3 mm -- it would be dwarfed by a grain of rice.