A. Gamma rays
B. Microwaves
C. A beam of white light
D. A beam of coherent light
Correct Answer: A beam of coherent light ✔
Last Updated: February 08, 2019
A. Gamma rays
B. Microwaves
C. A beam of white light
D. A beam of coherent light
Correct Answer: A beam of coherent light ✔
Last Updated: February 08, 2019