Electromagnet Spectrum – Online MCQs – Physics 10th

1. Which of the following electromagnetic waves is used in medicine to destroy cancer cells?

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

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

4. Select the correct statement(s) from the following:
(i) Wavelength of microwaves is greater than that of ultraviolet rays
(ii) The wavelength of infrared rays is lesser than that of ultraviolet rays
(iii) The wavelength of microwaves is lesser than that of infrared rays
(iv) Gamma ray has the shortest wavelength in the electromagnetic spectrum

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

6. Stars are natural transmitters of:

7. Electromagnetic waves are:

8. Select the wrong statement. Electromagnetic waves:

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

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

11. It has the highest wavelength of all the colours.

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

13. The group containing only electromagnetic waves is:

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

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

16. The human body also gives out:

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

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

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

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