A transmitter sends radio waves through air at a speed of 3.0 × 108 m/s.
The frequency is increased from 1.0 MHz to 2.0 MHz, while the wave speed remains constant.
The table shows four possible changes in wavelength.
| Change | Wavelength at 1.0 MHz in m\mathrm{m}m | Wavelength at 2.0 MHz in m\mathrm{m}m |
|---|---|---|
| W | 150 | 75 |
| X | 300 | 150 |
| Y | 300 | 600 |
| Z | 300 | 300 |
Which change in wavelength is correct?
Change W
Change Z
Change Y
Change X