Newton's Formula for the Speed of Sound in Gases

Author:G L Mittal & TARUN MITTAL
11th ICSE
IMPORTANT

Important Questions on Newton's Formula for the Speed of Sound in Gases

MEDIUM
IMPORTANT

At what temperature will the speed of sound be double of its value at 27°C ?

HARD
IMPORTANT

If the speed of sound at 0°C  be 330 ms-1, then at what temperature will its value become 495 ms-1?

MEDIUM
IMPORTANT

Calculate the ratio of the speeds of sound at 0°C and 1092 K in air. 

MEDIUM
IMPORTANT

The wavelength of a sound note of frequency 500 Hz at 15°C in air is 0.68 m. The density of air at 0°C is 1.29 kg m-3 . Calculate γ for air. The atmospheric pressure is 1.01 × 105 N m-2

HARD
IMPORTANT

Calculate the difference in the speed of sounds in air at - 3°C , 60 cm pressure of mercury and 30°C, 75 cm pressure of mercury. The speed of sound in air at 0°C is 332 ms-1.

HARD
IMPORTANT

The speed of sound in air at 15°C  is 340 m s-1. What are the speeds at 0°C and at 30°C ?

HARD
IMPORTANT

If the density of air at normal temperature and pressure be 1.293 kg m-3, the density of mercury at 0°C be 13.6 x 103 kg m-3Cp=0.2417 and Cv=0.1715, then calculate the speed of sound in air at 100°Cg=9.8 N kg-1

MEDIUM
IMPORTANT

Find the ratio of the speeds of sound in hydrogen and oxygen at the same temperature. Their molecular masses are 2 and 32 respectively. 

HARD
IMPORTANT

Find the ratio of the speeds of sound in hydrogen and carbon dioxide at the same temperature. The values of γ for H2 are CO2, are 1.4  and 1.3 respectively, and the ratio of their molecular masses is 1:22.