Length of a string tied to two rigid supports is $40 c m$ . Maximum wavelength (in $c m$ ) of a stationary wave produced on it is

20

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80

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40

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120

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Solution

The correct option is B $80$
Maximum wavelength is when string has only $1$ antinode and at that
time $L = \frac{λ}{2}$
$\Rightarrow λ = 2 \times L$
$= 2 \times 40$
$= 80 c m$

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Length of a string tied to two rigid supports is 40cm. Maximum wavelength (in cm) of a stationary wave produced on it is

The correct option is B 80Maximum wavelength is when string has only 1 antinode and at thattime L=λ2⇒λ=2×L=2×40=80 cm

Length of a string tied to two rigid supports is $40 c m$ . Maximum wavelength (in $c m$ ) of a stationary wave produced on it is

The correct option is B $80$
Maximum wavelength is when string has only $1$ antinode and at that
time $L = \frac{λ}{2}$
$\Rightarrow λ = 2 \times L$
$= 2 \times 40$
$= 80 c m$