Water is poured into a resonance tube held under a 340 Hz fork: minimum height of water for resonance

The same question, asked 2 times: 9 May 2023 S1*, 11 May 2023 S1. Every wording below, oldest first.

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Question 1
9 May 2023 S1
50 $A tuning fork of frequency 340 Hz is vibrated just above a tube of 120 cm height. Water is slowly poured in the tube. What is the minimum height of water necessary for resonance?$
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Question 2
11 May 2023 S1
27 $A resonance tube closed at one end is of height 1.5 m. A tuning fork of frequency 340 Hz is vibrating above the tube. Water is poured in the tube gradually. The minimum height of water column for which resonance is obtained is (Neglect end correction, speed of sound in air = 340 m/s)$
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Question 1