Electromagnet Spectrum – Online MCQs – Physics 10th

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

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

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

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

5. It uses a series of low frequency x-rays and a computer to produce a 3D image of soft tissues and bones.

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

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

8. 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

9. The white light consists of:

10. The human body also gives out:

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

12. The group containing only electromagnetic waves is:

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

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

15. Select the wrong statement. Electromagnetic waves:

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

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

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

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

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