Discussion
The radiation pressure on a perfectly absorbing surface exposed to a power density \( S \) is
Answer: C
The momentum arriving per unit area per unit time is the energy flux divided by the speed of light, and absorbing it delivers that momentum. A perfect reflector receives twice as much, since the momentum is reversed rather than merely stopped.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development