Physics Practice: Spectrum (Mock Test 2 - Intermediate)
1. Which constituent color of white light has the maximum wavelength in the visible spectrum?
2. Radiations which are used for therapy in treating cancer and killing cancer cells are:
3. Infrared radiations are also known as ________ radiations because they produce a heating effect.
4. The refractive index of glass is lowest for which color of light?
5. Which of the following electromagnetic waves is used in remote controls of TV sets?
6. Ultraviolet radiations are used for ________ because they can kill bacteria.
7. The electromagnetic waves whose frequency is just less than that of violet light are:
8. Scattering of light by the atmosphere is inversely proportional to the ________ power of wavelength.
9. Which of the following is used to detect forged documents and finger prints?
10. The speed of light in a medium is $v$. If $c$ is the speed in vacuum, the refractive index $n$ is:
11. Dark lines in the solar spectrum are known as:
12. Which of the following is used in taking X-ray photographs of human body parts?
13. For a given prism, the deviation is least for ________ light and most for ________ light.
14. Radiations which can pass through quartz but are absorbed by glass are:
15. In an electromagnetic spectrum, as we move from Radio waves towards Gamma rays, the frequency ________.
16. The color of light is determined by its ________ which does not change during refraction.
17. Which radiation is used for "Radiotherapy"?
18. The wavelength of red light is about ________ times the wavelength of violet light.
19. Which of the following is a "Chemical radiation"?
20. The speed of light in vacuum is related to frequency ($ f $) and wavelength ($ \lambda $) as: