Which of the following is least dense. cork .glass .water .or mercury. hurry pls

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

powerful computers now, not then

because if the tool that you are using is not balanced it there would be false mass.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.