If the standard length of a crossing is 480 cm, the number of crossing is
1 in 8 \( \frac { 1 } { 2 } \) of B.G
1 in 8\( \frac { 1 } { 2 } \) of M.G
both (a) and (b)
none of these.
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Answer : Option C
Explanation :
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