You are given a figure (x) by four figures 1, 2, 3 and 4 such that (x) is embedded in one of them. Trace the correct alternative.
From observation
You are given a figure(x) followed by four figures 1, 2, 3 and 4 such thet (x) is embedded in one of them. Trace out the correct alternative.
The path of a ray of light coming from air passing through a rectangular glass slab traced by four students are shown as A, B, C and D in figure. Which one of them is correct?