QUESTION

# True or false1. In 1666 Issac Newton discovered that white light is composed of all the colors of a rainbow. 2. The colors of the visible spectrum are red, orange, yellow, green, blue and violet. 3.

True or false

1. In 1666 Issac Newton discovered that white light is composed of all the colors of a rainbow.

2. The colors of the visible spectrum are red, orange, yellow, green, blue and violet.

3. In 1861 James Maxwell defined light as an oscillating electromagnetic wave.

4. The photoelectric effect indicates that light is made up of waves.

5. Thin film diffraction indicates that light is made of a stream of photons.

6. The best model that science has for the nature of light is that light consists of localized wave packets.

7. The wavelength is defined as the vertical peak to peak distance.

8. Nothing travels faster than light does in a vacuum.

9. If the wavelength of a light wave is 6 x 10^-8 m then the frequency is 5 x 10^16 Hz.

10. If the frequency of a light wave is 1 x 10^12 Hz, then the wavelength is 3 x 10^-4 m.

11. Electron decays create the spectral lines in an emission spectrum.

12. The most intense Balmer lines occur at a temperature of 20,000 K.

13. Sunlight is composed of a continuous spectrum of light.

14. As a sound source passes you, you will first hear a higher pitch than normal and then a lower pitch.

15. If a star has no radial velocity then its spectrum should be blueshifted.

16. A spectral line has a wavelength of 400 nm in the laboratory. In a star, the same spectral line is observed to have a wavelength of 300 nm. The star is moving towards the observer and z = - 0.25.

17. In the Bohr model of an atom, electrons engage in quantum jumps from one quantum state to another quantum state.

18. The energy of a yellow photon is greater than the energy of an x-ray photon.

19. The Earth's atmosphere is transparent to visible light.

20. Earth's atmosphere is opaque to ultraviolet light because the ozone in the upper atmosphere absorbs ultraviolet photons.

21. Radio waves with a wavelength of 21 cm are used to detect atomic hydrogen.

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