Correct Answer: Option A

Explanation

\(\lambda\) = \(\frac{v}{f}\)

= \(\frac{340}{170}\)

= 2m ; for closed pipe

L = \(\frac{1}{4}\)\(\lambda\)

= \(\frac{1}{4}\) x \(\frac{2}{1}\)

= 0.5m

= 50cm

• If the power of a lens is +2.5D. Calculate the radius of curvature (a). 80cm (b). 40cm (c). 25cm (d).... Answer this

  1 Answers   ·   Physics   ·   3 days ago
• Subjects to learn under petroleum engineering? Answer this

  1 Answers   ·   3 days ago
• what is the cut of mark for medical doctor in university and list all the university? Answer this

  1 Answers   ·   1 day ago