Electromagnet Spectrum – Online MCQs – Physics 10th

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

2. Electromagnetic waves are:

3. Which statement is TRUE about the red light?

4. Light year is a unit of:

5. The group containing only electromagnetic waves is:

6. Which one of the following has the shortest wavelength?

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

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

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

10. The structure of solids is investigated by using:

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

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

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

14. In a vacuum, all electromagnetic spectrum components have the same:

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

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

17. Ultraviolet radiation is further divided into:

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

19. Which of the following has a minimum wavelength?

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