If $\lambda = 10 \mathring A$,then it corresponds to

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

Which of the following represents the wavelength range of infrared rays?

$X$-rays and gamma rays are both electromagnetic waves. Which of the following statements is true?

The wavelengths of Gamma rays,$X$-rays,and microwaves are respectively $\lambda_r, \lambda_x$,and $\lambda_m$. Then which of the following relations is correct?

Which of the following is not an electromagnetic wave?