What is the wavelength for a wave having frequency $50 \mathrm{~Hz}$ ?

What is the wavelength for a wave having frequency $50 \mathrm{~Hz}$ ?
  1. $1.6 \times 10^6 \mathrm{~m}$
  2. $6 \times 10^{-2}$
  3. $6 \times 10^6 \mathrm{~m}$
  4. $15 \times 10^2 \mathrm{~m}$

Solution

$v=\frac{c}{\lambda}$ $\begin{aligned} & v=\frac{c}{\lambda}=\frac{3 \times 10^8}{50} \\ & =6 \times 10^6 \mathrm{~m}\end{aligned}$

Asked in: MHT CET 2021 (21 Sep Shift 2)

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