OnlineCBT
Chemistry · Structure of atom
हिन्दीCalculate the wavelength of a light wave whose period is \( 2.0 \times 10^{-10} \text{ s} \).
Correct answer · Option 4
\( 6.0 \times 10^{-2} \text{ m} \)
Explanation
Frequency \( \nu = \frac{1}{T} = \frac{1}{2.0 \times 10^{-10}} = 5.0 \times 10^9 \text{ s}^{-1} \). Wavelength \( \lambda = \frac{c}{\nu} = \frac{3 \times 10^8}{5.0 \times 10^9} = 0.06 \text{ m} = 6.0 \times 10^{-2} \text{ m} \).
