Water waves are 

(1) Longitudinal

(2) Transverse

(3) Both longitudinal and transverse

(4) Neither longitudinal nor transverse

Subtopic:  Types of Waves |
 70%
From NCERT
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The waves in which the particles of the medium vibrate in a direction perpendicular to the direction of wave motion is known as 

1. Transverse wave

2. Longitudinal waves

3. Propagated waves

4. None of these

Subtopic:  Types of Waves |
 81%
From NCERT
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What is the phase difference between two successive crests in the wave?

(1) π

(2) π/2

(3) 2π

(4) 4π

Subtopic:  Wave Motion |
 52%
From NCERT
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A wave of the frequency of 500 Hz has a velocity of 360 m/sec. The distance between two nearest points 60° out of phase is :

(1) 0.6 cm

(2) 12 cm

(3) 60 cm

(4) 120 cm

Subtopic:  Types of Waves |
 77%
From NCERT
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Sound waves of wavelength greater than that of audible sound are called :

(1) Seismic waves

(2) Sonic waves

(3) Ultrasonic waves

(4) Infrasonic waves

Subtopic:  Types of Waves |
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The ratio of masses of nitrogen and oxygen is 14:16. The temperature at which the speed of sound in nitrogen will be same at that in oxygen at 55°C is -

1. 35°C

2. 48°C

3. 65°C

4. 14°C

Subtopic:  Speed of Sound |
 70%
From NCERT
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A wavelength 0.60 cm is produced in air and it travels at a speed of 300 ms–1. It will be an 

(1) Audible wave

(2) Infrasonic wave

(3) Ultrasonic wave

(4) None of the above

Subtopic:  Types of Waves |
 61%
From NCERT
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A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at a distance of 2m and 3m respectively from the source. The ratio of the intensities of the waves at P and Q is :

(1) 9 : 4

(2) 2 : 3

(3) 3 : 2

(4) 4 : 9

Subtopic:  Energy of Waves |
 70%
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An observer standing near the seashore observes 54 waves per minute. If the wavelength of the water wave is 10m then the velocity of a water wave is :

(1) 540 ms-1

(2) 5.4 ms-1

(3) 0.184 ms-1

(4) 9 ms-1

Subtopic:  Wave Motion |
 81%
From NCERT
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The equation of a wave is y=2sinπ(0.5x200t), where x and y are expressed in cm and t in sec. The wave velocity is :

1. 100 cm/sec

2. 200 cm/sec

3. 300 cm/sec

4. 400 cm/sec

Subtopic:  Wave Motion |
 89%
From NCERT
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