Which of the following is absorbed by the ozone layer?

The frequency of a wave is $6 \times 10^{15} \text{ Hz}$. This wave is:

The frequency order for $\gamma$-rays $(a)$,$X$-rays $(b)$,and $UV$-rays $(c)$ is given as:

Which of the following waves has the maximum wavelength?

If wavelengths of visible rays, microwaves, and $X$-rays are $\lambda_v$, $\lambda_m$, and $\lambda_x$ respectively, then which of the following relations is correct?

The frequency range from $3\, MHz$ to $30\, MHz$ is known as: