1) During chaining along a straight line, the . leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is

2) A metallic tape is made of

3) For a well-conditioned triangle, no angle should be less than

4) The angle of intersection of the two plane mirrors of an optical square is

5) The allowable length of an offset depends upon the