Directions: In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
The Prongs a vibrating tuning fork are immersed in water. Then: (1) amplitude of the waves decreases (2) velocity of the waves decreases (3) frequency of the waves decreases (4) wavelength of the waves increasesA) 1 and 2 are correct
B) 2 and 3 are correct
C) 1 and 4 and correct
D) 1, 2 and 4 are correct
Correct Answer: C
Solution :
1. The amplitude of vibration will definitely decrease due to resistance produced by the water medium. 2. The velocity of sound in water is greater than the velocity in air. 3. The frequency is the property of source and hence, does not change. 4.\[Velocity=frequency\times wavelength\]so, as velocity increases, wavelength of the waves increases.
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