Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Sajan sarthak
1. convex upward will be the Answer because towards the top of convex shape it will have closer contours. 2 . horizontal ground will have a single elevation so this is eliminated. 3.planar slope will have very close contours if steep and if gentle very wide contours so Elliminated 4. concave will have closed towards periferi while spaced /widened towards centre so Elliminated. see the attached file below.