The frequency of infrared radiation that has a wavelength of 1.5 × 10³ nm is 2.0 × 10⁷ sec^-1 (given: speed of light = 3.0 × 10⁸ m/sec).

Question

Quizplus · Accepted Answer

The frequency of radiation is calculated using the formula $f = \frac{c}{\lambda}$, where $f$ is the frequency, $c$ is the speed of light ($3.0 \times 10^{8} \, \text{m/s}$), and $\lambda$ is the wavelength. Given the wavelength is $1.5 \times 10^{-7}$ meters (since $1 \, \text{nm} = 1 \times 10^{-9} \, \text{m}$), the correct frequency should be calculated as $f = \frac{3.0 \times 10^{8}}{1.5 \times 10^{-7}} = 2.0 \times 10^{15} \, \text{s}^{-1}$, not $2.0 \times 10^{17} \, \text{s}^{-1}$.

The Frequency of Infrared Radiation That Has a Wavelength of 1.5