Assertion (A): A standing wave is produced in a string clamped at one end and free at the other end. The length of string is odd multiples of λ4.
Reason (R): Distance between successive node and antinode is λ4.
A
Both assertion and reason are true and reason is the correct explanation of assertion
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B
Both assertion and reason are true but reason is not the correct explanation of assertion.
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C
Assertion is true but reason is false
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D
Both assertion and reason are false
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Solution
The correct option is B Both assertion and reason are true but reason is not the correct explanation of assertion. At the clamped end always a node is formed and at the tree end , an antinode is formed. distance between a node and antinode is λ4 ∴ so total length is n(λ2)+λ4=(2n+1)λ4