Advertisements
Advertisements
Question
What is the limitation of Newton's formula for velocity of sound?
Solution
- Experimentally, it is found that the velocity of sound in air at N. T. P is 332 m/s. Thus, there is a considerable difference between the value predicted by Newton’s formula and the experimental value.
- The experimental value is 16% greater than the value given by the formula. Newton failed to provide a satisfactory explanation for the difference.
APPEARS IN
RELATED QUESTIONS
Answer briefly.
What is the effect of pressure on the velocity of sound?
At what temperature will the speed of sound in the air be 1.75 times its speed at S.T.P?
Solve the following problem.
If the velocity of sound in air at a given place on two different days of a given week are in the ratio of 1:1.1. Assuming the temperatures on the two days to be same what quantitative conclusion can your draw about the condition on the two days?
The extension in a wire obeying Hooke's law is x. The speed of sound in the stretched wire is v. If the extension in the wire is increased to 4x, then the speed of sound in a wire is
An obstacle is moving towards the source with velocity v. The sound is reflected from the obstacle. If c is the speed of sound and A. is the wavelength, then the wavelength of the reflected wave λr is
A wave is represented by the equation, y = A sin (10 πx + 15 πt + π/3) where x is in metre and t are in second. Which of the following statements is correct?
At a certain instant, a stationary transverse wave is found to have maximum kinetic energy. The appearance of string at that instant is ____________.
The ratio of densities of nitrogen and oxygen is 14:16. The temperature at which the speed of sound in nitrogen will be the same as that in oxygen at 79°C is ______
Laplace's correction in the formula for the speed of sound given by Newton was required because sound waves ______.
Assertion: The change in air pressure affects the speed of sound.
Reason: The speed of sound in gases is proportional to the square of pressure.
At which temperature the speed of sound in hydrogen will be same as that of speed of sound in oxygen at 47° C?
If the tension in the stretched string is increased by 69%, its fundamental frequency ______.
If y = y0 sin 2π `("ft" - x/lambda)` is, the equation of transverse wave, then for what value of λ the maximum particle velocity is equal to four times the wave velocity?
The ratio of the speed of sound in nitrogen gas to that in helium gas, at 300 K is ______.
A body sends waves 100 mm long through medium P and 0.25 m long in medium Q. If the velocity of the wave in medium P is 80 cms-1. The velocity of the wave in medium Q is ______.
The equation of a wave travelling on a stretched string is y = 4 sin 2π `("t"/0.02-"x"/100)`, here x and y are in cm and t is in second. The speed of wave is ______.
