II. MULTIPLE CHOICE
A. Direction: Choose the letter of the best answer.

1. What is the speed of the electromagnetic wave in a vacuum?
A Zero
B. Always the same as the speed of light
C. Changing depending on the value of its wavelength
D. None of the above

2. How are electromagnetic waves produced?
Any disturbance
Currents
C. Vibrating charge
D Voltage source

3. What happens to the frequency of the electromagnetic wave if its wavelength
increases?
A It decreases
C. It remains the same
В. It increases as well.
D. None of the above


4. In the electromagnetic wave, what is the direction of the propagation of the wave?

A. Always to the right
B. Cannot be determined
C. Parallel to electric and magnetic field directions
D Perpendicular to the electric and magnetic field directions

5. Which of the following forms of electromagnetic waves has the widest frequency
range?
A.
В.
X-ray
Microwave
C Ultraviolet
D. Radio waves

6. Who contributed in developing equations that showed the relationship
of electricity and magnetism?
A. André-Marie Ampere
C. James Clerk Maxwell
B. Heinrich Hertz
D. Michael Faraday

7. Who showed experimental evidence of electromagnetic waves and their
link to light?
A. André-Marie Ampere
C. James Clerk Maxwell
B. Heinrich Hertz
D. Michael Faraday


8. Which type of wave has the shortest wavelength?
A Gamma ray
C. Ultraviolet
В. Microwave D. X-ray

9. What is the other term for electromagnetic waves? A Electric waves C. Mechanical waves B. Longitudinal waves D. Transverse waves

10 Which of the following correctly lists electromagnetic waves in the order from the longest to the shortest wavelength? A Gamma rays, ultraviolet, infrared, microwaves B Microwaves, ultraviolet, visible light gamma rays C. Radio waves, infrared, gamma rays ultraviolet D. Radio waves, infrared, visible light X-rays

11. How is the wavelength of infrared differs from the wavelength of ultraviolet waves? A. Longer C. The same B. Shorter D. None of the above

12. All EM waves have the same speed. A. True B. False

13. What is the main difference between a radio wave and a light wave? A Speed C Both A and B B. Wavelength D. None of the above

14. Which of the following is NOT an electromagnetic wave? A. Infrared C. Sound B. Light D. Radio

15 What is the frequency range of UV radiation? A 3.5x109 - 3x1011 Hz C 7.5x1014 - 3x1016 Hz В. 3.5x1011 - 4x1014 Hz D. 7.5x1016 - 3x1019 HZ R Direction match the​