1.

Assertion  :       Soldiers are asked to break steps while crossing the bridge.          Reason      :       The frequency of marching may be equal to the natural frequency of bridge and may lead to resonance which can break the bridge. [AIIMS 2001]

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.
E. If assertion is false but reason is true.
Answer» B. If both assertion and reason are true but reason is not the correct explanation of the assertion.


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