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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

`1.42 Å`

C

`6. 05 Å`

D

`3. 63 Å`

Text Solution

Verified by Experts

The correct Answer is:
a

The given standing wave has 2 segments.
The given standing wave is shown in the figure.

As length of one loop of segment is `2(lambda/2)`.
`therefore 2 lambda/2 = 1.21 Å rArr lambda = 1.21 Å`
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