Electromagnet Spectrum – Online MCQs – Physics 10th

1. Which statement is TRUE about the red light?

2. Which of the following has a minimum wavelength?

3. Light year is a unit of:

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

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

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

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

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

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

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

11. The waves that have maximum penetrating power to treat tumours are:

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

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

14. Electromagnetic waves are:

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

16. Which of the following has a minimum wavelength?

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

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

19. Waves in decreasing order of their wavelength are:

20. This colour has its own refracted path in the air and becomes distinct on the spectrum