Electromagnet Spectrum – Online MCQs – Physics 10th

1. 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

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

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

4. What are the two colours that emerge from Prism’s two extreme ends?

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

6. The type of electromagnetic wave used in security scanners at night is:

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

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

9. Which among the following has the maximum penetrating power?

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

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

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

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

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

15. Waves in decreasing order of their wavelength are:

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

17. Which statement is TRUE about the red light?

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

19. Which of the following has a minimum wavelength?

20. Which of the following has a minimum wavelength?