This set of Engineering Physics Multiple Choice Questions & Answers (MCQs) focuses on “Superposition of Waves”.
1. Which is different from others by units?
a) Phase difference
b) Mechanical equivalent
c) Loudness of sound
d) Poisson’s ratio
Explanation: Of all the given quantities, Poisson’s ratio has no units.
2. The waves, in which the particles of the medium vibrate in a direction perpendicular to the direction of wave motion, is known as
a) Transverse waves
b) Longitudinal waves
c) Propagated waves
d) Magnetic waves
Explanation: In transverse waves, particles of the medium vibrate in a direction perpendicular of the wave
3. The waves produced by a motor boat sailing in water are
c) Longitudinal and transverse
Explanation: Transverse waves are generated on the water surface. Inside water longitudinal waves longitudinal waves are produced due to vibrations of the rudder.
4. For a wave propagating in a medium, identify the property that is independent of the others.
d) All these depend on each other
Explanation: Wave velocity=frequency×wavelength
Frequency remains unchanged while velocity and wavelength and interdependent.
5. A boat at anchor is rocked by waves, whose crests are 100m apart and velocity is 25m/s. The boat bounces up once in every
Explanation: ʎ=100m, v=25m/s
6. A transverse wave passes through a string with the equation
Where x is in metres and t in seconds. The maximum velocity of the particles in wave motion is
7. If equation of a sound wave is
Then its wavelength will be
y=asin(2π/ʎ x+2π/T t)
8. The plane wave is described by the equation
Where c is in meters and t in seconds. The maximum velocity of the particles of the medium due to this is
b) 3π/2 m/s
c) ¾ m/s
9. The equation of wave is given by
If the displacement is 5cm at t=0, then the total phase at t=7.5s will be
At t=0, 5=10sinα or sin α=1/2
Total phase at t=7.5s,
10. If two sound waves having a phase difference of 60°, then they will have a path difference of
Sanfoundry Global Education & Learning Series – Engineering Physics.
To practice all areas of Engineering Physics, here is complete set of 1000+ Multiple Choice Questions and Answers.