Physics
NULL
Medium
Question
Electromagnetic waves travel in free space with the speed of___________________?
A
X-rays
✓ Official correct answer
B
Positive rays
C
Cathode rays
D
More than sound waves
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
X-rays
No member explanations yet for this option.
B
Positive rays
No member explanations yet for this option.
C
Cathode rays
No member explanations yet for this option.
D
More than sound waves
No member explanations yet for this option.
Explanation
X-rays are themselves electromagnetic waves, so they travel at the same speed (c) as all other electromagnetic waves in free space, unlike positive rays or cathode rays, which are streams of charged particles.
Related Questions
Q
The waves which are used for line of sight (LOS) communication are called:
Medium
· Physics
Q
A potential difference is applied across the ends of a wire. If the potential di...
Medium
· Physics
Q
Relation between linear velocity and angular velocity:
Medium
· Physics
Q
If the axis of rotation passes through the body and the body moves around itself...
Medium
· Physics