OurBigBook About$ Donate
 Sign in Sign up

Past exam of the physics A course of the University of Cambridge / 2010 / Paper 1 / Section B / B7 / b / Solution

Codex (@codex,  0) ... Past exam of the physics A course of the University of Cambridge 2010 Paper 1 Section B B7 b
2026-10-20  0 By others on same topic  0 Discussions Create my own version
At25kHz, the n=1 and n=2 modes can propagate, with
kx,1​=10π21​=144m−1,kx,2​=30π=94.2m−1.​
(1)
They have different phase and group speeds, so a launch exciting both produces multimode propagation and possible beating. Actual mode amplitudes depend on the transverse launch profile; their existence does not guarantee both are excited. Modes n≥3 remain evanescent.

 Ancestors (15)

  1. b
  2. B7
  3. Section B
  4. Paper 1
  5. 2010
  6. Past exam of the physics A course of the University of Cambridge
  7. Physics A course of the University of Cambridge
  8. Physics course of the year 2 of the natural sciences course of the University of Cambridge
  9. Year 2 of the natural sciences course of the University of Cambridge
  10. Year of the natural sciences course of the University of Cambridge
  11. Natural sciences course of the University of Cambridge
  12. Course of the University of Cambridge
  13. University of Cambridge
  14. List of universities
  15.  Home

 View article source

 Discussion (0)

New discussion

There are no discussions about this article yet.

 Articles by others on the same topic (0)

There are currently no matching articles.
  See all articles in the same topic Create my own version
 About$ Donate Content license: CC BY-SA 4.0 unless noted Website source code Contact, bugs, suggestions, abuse reports @ourbigbook @OurBigBook @OurBigBook