UNIT XI: Waves - Online Test
Q1. Which of the following represents a wave
Answer : Option D
Explaination / Solution:
No Explaination.
Q2. A man sitting on a swing which is moving to an angle of 60° from the vertical is blowing a whistle which has a frequency of 2.0 k Hz. The whistle is 2.0 m from the fixed support point of the swing. A sound detector which detects the whistle sound is kept in front of the swing. The maximum frequency the sound detector detected is
Answer : Option A
Explaination / Solution:
No Explaination.
Q3.
Let y = 1/(1+x2)
at t=0s be the amplitude of the wave
propagating in the positive x-direction. At t
= 2 s, the amplitude of the wave
propagating becomes 1 / 1+(x-2)2. Assume that the shape of the wave does not
change during propagation. The velocity of the wave is
Answer : Option B
Explaination / Solution:
No Explaination.
Q4. A
uniform rope having mass m hangs vertically from a rigid support. A transverse
wave pulse is produced at the lower end. Which of the following plots shows the
correct variation of speed v with height
h from the lower end?
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. An organ pipe A closed at one end is allowed to vibrate in its first harmonic and another pipe B open at both ends is allowed to vibrate in its third harmonic. Both A and B are in resonance with a given tuning fork. The ratio of the length of A and B is
Answer : Option C
Explaination / Solution:
No Explaination.
