A transverse wave in propagating on a stretched string of mass per unit length 32 g/m. The tension on the string is 80 N. The speed of the wave over the string is
5/2 m/s
50 m/s
2/5 m/s
Consider the propagating sound (with velocity 330 m/s) in a pipe of length 1.5 m with one end closed and the other open. The frequency associated with the fundamental mode is
11 Hz
55 Hz
110 Hz
165 Hz
B.
55 Hz
Given,
Velocity of sound = 330 m/s
Length of closed pipe = 1.5 m
In a closed pipe for fundamental mode
A standing wave propagating with velocity 300 m/s in an open pipe of length 4 m has four nodes. The frequency of the wave is
75 Hz
100 Hz
150 Hz
300 Hz
Consider the vehicle emitting sound wave of frequency 700 Hz moving towards an observer at a speed 22 m/s. Assuming the observer as well as the medium to be at rest and velocity of sound in the medium to be 330 m/s, the frequency of sound as measured by the observer is
2525/4 Hz
1960/3 Hz
2240/3 Hz
750 Hz
Which of the following statement is correct ?
Light waves are transverse but sound waves are waves on strings are longitudinal
Sound waves and waves on a string and transverse but light waves are longitudinal
Light waves and waves on a string are transverse but sound waves are longitudinal
Light waves and sound waves are transverse but waves on string are longitudinal
The apparent charige in frequency of sound due to the relative motion between the observer and the source of sound is called
Doppler effect
Phenomenon of beats
Phenomenon of stationary waves
Diffraction of sound waves
Pick out the condition which is not required for the formation of stationary waves.
The medium on which waves are formed should be bound medium
Both the waves should have same frequency
Both the waves should have same velocity
The waves should travel in same direction
The harmonic mode which resonates with a closed pipe of length 22 cm, when excited by a 1875 Hz source and the number of nodes present in it respectively are (velocity of sound in air = 330 ms-1)
1st, 1
3rd, 1
5th, 3
5th, 4