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A standing wave having 3 nodes and 2 ant...

A standing wave having 3 nodes and 2 antinodes is formed between two atoms having a distance 1.21Å between them. The wavelength of the standing wave is

A

`1.21 Å`

B

`2.42 Å`

C

`6.05 Å`

D

`3.63Å`

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The correct Answer is:
A
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