MCQ
Two waves having same velocity enter electric and magnetic fields respectively. If $\lambda_1$ and $\lambda_2$ are their wavelengths as they move in the fields, then.
- A$\lambda_1,\lambda_2$ are constants
- ✓$\lambda_1$ and $\lambda_2$ are variable
- C$\lambda_1$ is variable $\lambda_2$ is constant
- D$\lambda_2$ is variable, $\lambda_1$ is constant
