AP EAMCET202422 May 2024Morning ShiftPhysicsWaves and SoundActual

The vibrations of four air columns are shown below. The ratio of frequencies is

Options

A1:2:3:4
B1:3:2:4
C1:4:3:2
D1:4:2:3

Correct answer

D. 1:4:2:3

Step-by-step solution

For fig(a), L= ₁ 4 ₁=4 ~L For fig (b), L= ₂ 4 + ₂ 2 + ₂ 4 = ₂ ₂= L For fig (c), L= ₃ 4 + ₃ 4 + ₃ 2 ₃=2 ~L For fig (d), L= ₄ 2 + ₄ 4 = 3 ₄ 4 ₄= 4 ~L 3 For air column, V 1 aligned & V ₁: V ₂: V ₃: V ₄= 1 ₁ : 1 ₂ : 1 ₃ : 1 ₄ & = 1 4 ~L : 1 ~L : 1 2 ~L : 3 4 ~L & =1: 4: 2: 3 aligned

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