MCQ
The period of the wave will be.
  • A
    $2.5\mu\text{s}$
  • B
    $0.25\mu\text{s}$
  • $0.025\mu\text{s}$
  • D
    $\text{None of these}$

Answer

Correct option: C.
$0.025\mu\text{s}$

Time period, $\text{T}=\frac{1}{\text{v}}$
$\text{T}=\frac{1}{40\times10^6}$
$\Rightarrow\text{T}=0.25\mu\text{s}$

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