Question

A cylindrical tube of length 120 cm and with a tuning fork of frequency 330 if it is formed by water than to get resonance minimum length of water column is b is equal to 3 30 metre per second

Answer 1

Explanation:

Given A cylindrical tube of length 120 cm and with a tuning fork of frequency 330 if it is formed by water than to get resonance minimum length of water column is b is equal to 330 metre per second

• We know that ν = nλ
•              So λ = ν / n
•                      = 330 / 330
•                      = 1 m
• So first resonance will be
•    L1 = λ / 4 = 1/4 = 25 cm
• So second resonance will be
• L 2 = 3λ / 4 = 3/4 = 75 cm
• Third resonance will be
• L3 = 5λ/ 4 = 5/4 = 125 cm
• Now maximum height of water will be 120 – 75
•                                                                = 45 cm

Answer 2

Answer:

f=(2n−1)v/4l

l=(2n−1)v/4f=(2n−1)×330/4×330=(2n−1)/4

l=14m,34m=25cm,75cm.

∴ Minimum height of water column

=120-75=45cm