Waves Test - 10...

A student is performing the experiment of resonance column. The diameter of the column tube is 4cm. The frequency of the tuning fork is 512Hz. The air temperature is 38°C in which the speed of sound is 336 m/s. The zero of the meter scale coincides with the top end of the resonance column tube. When the first resonance occurs, the reading of the water level in the column is

When a string is divided into three segments of length l₁,l₂ and l ₃ the fundamental frequencies of these three segments are v₁, v₂ and v₃ respectively. The original fundamental frequency (v) of the string is

The rope shown at an instant is carrying a wave travelling towards right, created by a source vibrating at a frequency n. Consider the following statements

A man is standing on a railway platform listening to the whistle of an engine that passes the man at constant speed without stopping. If the engine passes the man at time to. How does the frequency f of the whistle as heard by the man changes with time?

The figure shows four progressive waves A, B, C, and D with their phases expressed with respect to the wave A. It can be concluded from the figure that

The diagram below shows the propagation of a wave. Which points are in same phase?

The diagram below shows an instantaneous position of a string as a transverse progressive wave travels along it from left to right
Which one of the following correctly shows the direction of the velocity of the points 1, 2 and 3 on the string?

Figure here shows an incident pulse P reflected from a rigid support. Which one of A, B, C, D represents the reflected pulse correctly?

The correct graph between the frequency n and square root of density (ρ) of a wire, keeping its length, radius and tension constant, is