Electromagnet Spectrum – Online MCQs – Physics 10th

1. They are produced when fast moving electrons lose their energy quickly.

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

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

4. They are produced when the nuclei of unstable atoms decay into a stable nucleus or lose energy.

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

6. Which statement is TRUE about the red light?

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

8. The colour that is least deviated by a prism:

9. The electromagnetic rays used in radiotherapy to destroy cancer cells are:

10. It has the longest wavelength in the electromagnetic spectrum.

11. Which of the following statement is false for the properties of electromagnetic waves?

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

13. Which of the following has a minimum wavelength?

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

15. Stars are natural transmitters of:

16. All electromagnetic waves travel through space or vacuum at the same speed of:

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

18. This kind of lamp is used in sunbeds for artificial tanning.

19. Light year is a unit of:

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