# A tuning fork sends sound waves in the air. If the temperature of the air increases, which of the following parameters will change? 1. Displacement amplitude 2. Frequency 3. Wavelength 4. Time period

Subtopic:  Speed of Sound |
61%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

When sound wave is refracted from air to water, which of the following will remain unchanged?

1. Wave number

2. Wavelength

3. Wave velocity

4. Frequency

Subtopic:  Wave Motion |
88%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The speed of sound in a medium depends on:

 1 the elastic property but not on the inertia property 2 the inertia property but not on the elastic property 3 the elastic property as well as the inertia property 4 neither the elastic property nor the inertia property
Subtopic:  Speed of Sound |
73%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Two sound waves move in the same direction in the same medium. The pressure amplitudes of the waves are equal but the wavelength of the first wave is double the second. Let the average power transmitted across cross-section by the first wave be $$P_1$$ and that by the second wave be $$P_2.$$ Then:

 1 $$P_1=P_2~~~~~$$ 2 $$P_1=4P_2~~~~~$$ 3 $$P_2=2P_1$$ 4 $$P_2=4P_1$$
Subtopic:  Energy of Waves |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

When two waves with same frequency and constant phase difference interfere,

 1 there is a gain of energy. 2 there is a loss of energy. 3 the energy is redistributed and the distribution changes with time. 4 the energy is redistributed and the distribution remains constant in time.

Subtopic:  Energy of Waves |
70%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

An open organ pipe of length $$L$$ vibrates in its fundamental mode. The pressure variation is maximum:

 1 at the two ends 2 at the middle of the pipe 3 at a distance $$\dfrac{L}{4}$$ inside the ends 4 at a distance $$\dfrac{L}{8}$$ inside the ends
Subtopic:  Standing Waves |
58%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

An organ pipe, open at both ends, contains

1. longitudinal stationary waves

2. longitudinal travelling waves

3. transverse stationary waves

4. transverse travelling waves

Subtopic:  Standing Waves |
57%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A cylindrical tube, open at both ends, has a fundamental frequency v. The tube is dipped vertically in water so that half of its length is inside the water. The new fundamental frequency is

1. v/4

2. v/2

3. v

4. 2v

Subtopic:  Standing Waves |
71%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The phenomenon of beats can take place:

 1 for longitudinal waves only. 2 for transverse waves only. 3 for both longitudinal and transverse waves. 4 for sound waves only.
Subtopic:  Beats |
60%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A tuning fork of frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second are heard. The beat frequency reduces if the tension in the string is slightly increased. The original frequency of the string is

1. 506 Hz

2. 512 Hz

3. 518 Hz

4. 524 Hz

Subtopic:  Beats |
72%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch