(A) : The soldiers marching on a suspended bridge are advised to go out of steps. (R ) : Frequency of marching steps may match with the natural frequency of oscillation of bridge.

(A) : The soldiers marching on a suspended bridge are advised to go ou

1.	(A) : The soldiers marching on a suspended bridge are advised to go out of steps. (R ) : Frequency of marching steps may match with the natural frequency of oscillation of bridge.
Answer» Both 'A' and 'R' are TURE and 'R' is the correct explanation of 'A' Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A' A' is true and 'R' is false A' is false and 'R' is true Answer :A