Welcome to your Chapter 8 Electromagnetic Waves MCQs
1.
What is the ratio of the speed of infrared and ultraviolet rays in a vacuum?
2.
What is the velocity of electromagnetic wave in free space?
3.
Which basic oscillatory circuit is used these days to produce electromagnetic waves?
4.
Is the ratio of frequencies of UV rays and IR rays in the glass more than, less than or equal to 1?
5.
If the wavelength of electromagnetic radiation is doubled, what will happen to the energy of photons?
6.
On what basis is the classification of electromagnetic waves done?
7.
Which among the following has a frequency range of 500 kHz to 1000 MHz?
8.
What is the full form of UHF?
9.
Which among the following is an application of microwaves?
10.
Identify the electromagnetic wave which is also known as heatwaves.
11.
Pick out the electromagnetic wave which is highly harmful to humans.
12.
Monica wanted to take photographs of a monument. But since the surrounding is filled with smoke, she is not able to take good photos. Which one of the following electromagnetic waves can be used in this situation to help Monica?
13.
A radio can tune to any station in the frequency range from 2.5 MHz to 15 MHz bands. What is the corresponding wavelength band?
14.
The speeds of microwaves, infrared waves, and ultraviolet waves are Vm, Vi, and Vu respectively. Identify the correct combination showing the different waves in vacuum
15.
Electromagnetic radiation has an energy of 15 keV. Then this radiation belongs to which region of electromagnetic waves?
16.
Pick out the correct increasing order of energy of electromagnetic waves from the following
17.
Which of the following cannot travel in vacuum?
18.
Which of the following has minimum wavelength?
19.
Which of the following has maximum penetrating power?
