Solve this:
1) An object weighs 10N in air. What immersed fully in water, it weighs only 8N. The weight of liquid displaced by the object will be 
a) 2N                        b) 8N
c) 10N                      d) 12N
2) Which term of the A.P 5, 8, 11, 14.......is 320
a) 104th           b)105th
c) 106th           d) 64th
3) When the length of the shadow of a pillar is equal to its height, the elevation at source of sight is :
a) 30o                  b) 45o
c) 60o                  d) 90o

2N;106th term;45'
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