An astronomical satellite detects two distinct narrow-band signals, $X\,$ and $Y$ , from a distant active galactic nucleus.

Signal $X\,$ has a wavelength of 2.0 × 10^-7 m.
Signal $Y\,$ has a wavelength of 8.0 × 10^-5 m.

Which row in the table correctly identifies the regions of the electromagnetic spectrum to which these signals belong, and the ratio of the photon energy of $X\,$ to the photon energy of $Y$ ( $EXEY\displaystyle \frac{E_X}{E_Y}$ )?

Region of $X$ : Ultraviolet | Region of $Y$ : Infrared | $EXEY=4.0×102\frac{E_X}{E_Y} = 4.0 \times 10^2$

Region of $X$ : X-ray | Region of $Y$ : Microwave | $EXEY=4.0×102\frac{E_X}{E_Y} = 4.0 \times 10^2$

Region of $X$ : Ultraviolet | Region of $Y$ : Infrared | $EXEY=2.5×10−3\frac{E_X}{E_Y} = 2.5 \times 10^{-3}$

Region of $X$ : X-ray | Region of $Y$ : Microwave | $EXEY=2.5×10−3\frac{E_X}{E_Y} = 2.5 \times 10^{-3}$

An astronomical satellite detects two distinct narrow-band signals, $X\,$ and $Y$ , from a distant active galactic nucleus.

Signal $X\,$ has a wavelength of 2.0 × 10^-7 m.
Signal $Y\,$ has a wavelength of 8.0 × 10^-5 m.

Region of $X$ : Ultraviolet | Region of $Y$ : Infrared | $EXEY=4.0×102\frac{E_X}{E_Y} = 4.0 \times 10^2$

Region of $X$ : X-ray | Region of $Y$ : Microwave | $EXEY=4.0×102\frac{E_X}{E_Y} = 4.0 \times 10^2$

Region of $X$ : Ultraviolet | Region of $Y$ : Infrared | $EXEY=2.5×10−3\frac{E_X}{E_Y} = 2.5 \times 10^{-3}$

Region of $X$ : X-ray | Region of $Y$ : Microwave | $EXEY=2.5×10−3\frac{E_X}{E_Y} = 2.5 \times 10^{-3}$

6.2 Electromagnetic waves

Question 3

Markscheme

6.2 Electromagnetic waves

Question 3

Markscheme

6.2 Electromagnetic waves

Question 3

6.2 Electromagnetic waves Questions

6.2 Electromagnetic waves

Question 3

6.2 Electromagnetic waves Questions