Question

If \(c\) is the speed of light; and \(\lambda\) and \(\nu\) wavelength and frequency, respectively, of an electromagnetic radiation, then which of the following is true?
Choose the \textbf{correct answer from the options given below:}

• A. \(\lambda = c^2\)
• B. \(\nu = c^2\)
• C. \(\lambda = \frac{\nu}{c}\)
• D. \(\lambda = \frac{c}{\nu}\)

Hint:

To solve such questions, memorize the wave speed formula \(c = \lambda \nu\). It’s foundational in both physics and chemistry.

Answer 1

The Correct Option is D

The fundamental equation for wave motion is: \[ c = \lambda \nu \Rightarrow \lambda = \frac{c}{\nu} \] This is a standard relationship in the context of electromagnetic waves, where \(c\) is the speed of light, \(\lambda\) is the wavelength, and \(\nu\) (or \(f\)) is the frequency.