Chapter 5: Acoustics - Online Test
Q1. When a sound wave travels through air, the air particles
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. Velocity of sound in a gaseous medium is 330 m s–1.
If the pressure is increased by 4 times without causing a change in the temperature,
the velocity of sound in the gas is
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. The frequency, which is audible to the human ear is
Answer : Option B
Explaination / Solution:
No Explaination.
Q4. The velocity of sound in air at a particular
temperature is 330 m s–1. What will be its value when temperature is
doubled and the pressure is halved?
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. If a sound wave travels with a frequency of 1.25
× 104 Hz at 344 m s–1, the wavelength will be
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?
Answer : Option D
Explaination / Solution:
No Explaination.
Q7. Velocity of sound in the atmosphere of a planet
is 500 m s–1. The minimum distance between the sources of sound and
the obstacle to hear the echo, should be
Answer : Option C
Explaination / Solution:
No Explaination.
