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qUESTIONS

A travelling harmonic wave is represented by the equation y(x,t)=10^3sin(50t+2x), where x and y are in meter and t is in seconds. Which of the following is a correct statement about the wave?

A resonance tube is old and has a jagged end. It is still used in the laboratory to determine the velocity of sound in the air. A tuning fork of frequency 512 Hz produces the first resonance when the tube is filled with water to a mark 11cm below a reference mark, near the open end of the tube. The experiment is repeated with another fork of frequency 256 Hz which produces the first resonance when water reaches a mark 27cm below the reference mark. The velocity of sound in air, obtained in the experiment, is close to

Two monatomic ideal gases 1 and 2 of molecular mass m1 and m2, respectively are enclosed in separate containers kept at the same temperature. The ratio of speed of the sound in gas 1 to that in gas 2 is given by.

The temperature at which the speed of sound in air doubles from its value at 0°C is

The speed of sound in oxygen (O2) at a certain temperature is 460 m/s. The speed in helium (He) at the same temperature will be [assume both gases to be ideal].

A student is performing an experiment using a resonance column and a tuning fork of frequency 244 s − 1 . He is told that the air in the tube has been replaced by another gas (assuming that the air column remains filled with the gas). If the minimum height at which resonance occurs is ( 0.350 ± 0.005 ) m ( 0.350 ± 0.005 ) 𝑚 , the gas in the tube is

A source of sound frequency 600 Hz is placed inside water .the speed of sound in water is 1500m/s and in air is 300m/s. The frequency if sound recorded by an observer ,who is standing in air is.

A granite rod of 60 cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is 2.7×10^3 kgm-3 and its Young’s modulus is 9.27×10^10 Pa. What will be the fundamental frequency of the longitudinal vibrations?

The transverse displacement y(x,t) of a wave on a string is given by y(x,t) = e(ax2+bt2+2√abxt).This represents a

If a 1.5 m long steel sonometer wire has a tension that produces an elastic strain of 1%, then its fundamental frequency is 178.2 Hz. The density and elasticity of steel are given as 7.7 × 103 kg/m3 and 2.2 × 10^11 N/m2, respectively.

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