nov 03 Q16)
F increases as theta increases.
Hence A
June 04 Q14)
20 N, the weight, acts vertically downwards. Tension-40N is in the direction of the wire. Their sum total is the addition of the two vectors(forces). Hence B
June 08 q13) Triangle law of vector addition again. A
I answered briefly, if you need help with the diagram, let me know