MCQ
$750$ waves of an electromagnetic energy radiation passes in one minute from a point then what will be the wavelength of radiation
- A$4\times10^5\, m$
- ✓$2.4\times10^7\, m$
- C$4.16\times10^{-8}\, m$
- D$2.4\times10^9\, m$
✓
Answer
Correct option: B.
$2.4\times10^7\, m$
b
Frequency $(v)=\frac{750}{60}=12.5$
Frequency $(v)=\frac{750}{60}=12.5$
and $\lambda=\frac{C}{v}=\frac{3 \times 10^{8}}{12.5}=2.4 \times 10^{7} \,\mathrm{m}$
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