Discussion
If the speed of the transverse wave in a wire under certain tension \(T\) is \(v\) , then its speed under tension \(2T\) (in ms-1 ) is
Answer: C
The speed becomes \(\sqrt{2}v\).
The speed of a transverse wave on a string is \(v = \sqrt{\frac{T}{\mu}}\), where \(\mu\) is the mass per unit length, which does not change.
\[ v' = \sqrt{\frac{2T}{\mu}} = \sqrt{2}\,v \]
2v treats the speed as proportional to the tension rather than its square root. \(\frac{v}{\sqrt{2}}\) and \(\frac{v}{2}\) make the wave slower under greater tension, which is backwards.
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