Microwaves are used in

If $\lambda_r$,$\lambda_v$,and $\lambda_x$ are the wavelengths of red light,violet light,and $X$-rays respectively,then which of the following relations is correct?

The ozone layer blocks radiation of which wavelength?

Which of the following electromagnetic radiations has the smallest wavelength?

The frequencies of $X$-rays,$\gamma$-rays,and ultraviolet rays are $a, b$,and $c$ respectively. Which of the following relations is correct?

The electromagnetic oscillator used in a microwave oven produces electromagnetic waves with a wavelength in the range of ......