Q. If the standard length of a crossing is 480 cm, the number of crossing is (Solved)
1. 1 in 8½ of b.g.
2. 1 in 8½ of m.g.
3. both (a) and (b)
4. none of these
- c. both (a) and (b)
1. 1 in 8½ of b.g.
2. 1 in 8½ of m.g.
3. both (a) and (b)
4. none of these