• 720 m/s
• 820 m/s
• 920 m/s
• 1020 m/s

• 320 Hz
• 300 Hz
• 280 Hz
• 260 Hz
• #### 3.  With the increase in temperature, the frequency of the sound from an organ pipe

• Decreases
• Increases
• Remain unchanged
• Changes erratically
• #### 4.  Loudness of a note of sound is

• Directly proportional to amplitude of the wave
• Directly proportional to square of amplitude of wave
• Directly proportional to velocity of the wave
• Directly proportional to square of velocity of the wave
• #### 5.  The frequency of the note produced by plucking a given string increases as

• The length of the string increases
• The tension in the string increases
• The tension in the string decreases
• The mass per unit length of the string increases

• 242 / 252
• 2
• 5 / 6
• 11 / 6
• #### 7.  Energy is not carried by

• Longitudinal progressive waves
• Electromagnetic waves
• Transverse progressive waves
• Stationary wave

• 1.22 V
• 0.61 V
• 1.50 V
• 0.75 V
• #### 9.  Energy is to be carried from one place to another. Which one of the following cannot be used?

• Longitudinal progressive waves
• Transverse progressive waves
• Electromagnetic waves
• Standing (stationary) waves
• #### 10.  To demonstrate the phenomenon of beats we need

• Two sources which emit radiation of nearly the same frequency
• Two sources which emit radiation of exactly the same frequency
• Two sources which emit radiation of exactly the same frequency and have a definite phase relationship
• Two sources which emit radiation of exactly the same wavelength
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