A) Pipe closed at one end
Waves produced are longitudinal (sound waves)
= L ∴
λf = 4L
(p, t) are correct matching
A) Pipe open at both ends
Waves produced are longitudinal (sound waves)
= L ∴
λf = 2L
(p, s) are correct matching
B) Stretched wire clamped at both ends
Waves produced are transverse in nature. (waves on string)
= L ∴
λf = 2L
(q, s) are correct matching
C) Stretched wave clamped at both ends & mid point
Waves produced are transverse in nature (waves on string)
λf = L
(q, r) are correct matching