Electromagnet Spectrum – Online MCQs – Physics 10th

1. Light year is a unit of:

2. The optical phenomenon in which the splitting of white light into seven distinct colours occur is called:

3. Waves in decreasing order of their wavelength are:

4. The white light consists of:

5. Vibrating atoms in a hot, glowing bulb filament emit:

6. The waves used by artificial satellites for communication are:

7. The structure of solids is investigated by using:

8. It is a cancer treatment that uses controlled doses of high-frequency x-rays to kill cancerous cells and shrink tumours.

9. This colour has a maximum speed in the glass prism, with the slightest deviation.

10. It has been used for security purposes, particularly in military technology.

11. The list that shows electromagnetic waves from the lowest to the highest frequency is:

12. They are highly penetrating that can pass through flesh but not bones.

13. The ultra-high frequency band of radio waves in the electromagnetic wave is used as in:

14. The list that shows electromagnetic waves in order of increasing wavelength is:

15. Choose the electromagnetic wave that is the most dangerous to humans.

16. The type of waves that are used in the television remote controllers:

17. This colour has minimum speed, which with most deviation.

18. The velocity of light in a diamond is: (whereas the refractive index of a diamond with respect to vacuum is 2.5)

19. A narrow beam of white light passes from air into the glass and is refracted. The wave characteristic remains unchanged in its:

20. Which of these electromagnetic waves has a high frequency?