A. λ-rays
B. Positive rays
C. Cathode rays
D. More than sound waves
Correct Answer: λ-rays ✔
Last Updated: January 20, 2021
A. λ-rays
B. Positive rays
C. Cathode rays
D. More than sound waves
Correct Answer: λ-rays ✔
Last Updated: January 20, 2021