At room temperature, velocity of sound in air at 10 atmospheric pressure and at 1 atmospheric pressure will be in the ratio ………
(A) 10 : 1
(B) 1 : 10
(C) 1 : 1
(D) cannot say
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The compressibility of water is ‘o’ per unit atmospheric pressure. The decrease in its volume ‘V’ due to atmospheric pressure ‘P’ will be
Correct option is: (C) σPV
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Find the temperature at which the velocity of sound in air will be 1.5 times its velocity at 0 °C
Given: \(\frac{p}{p_0}\) = 1.5, T0 = 0 °C = 273 K To find: Temperature (T) Formula: \(\frac{v}{v_0}=\sqrt{\frac{T}{T_0}}\) Calculation: From formula, \(\frac{T}{T_0}=(\frac{v}{v_0})^2\) ∴ T = T0 \((\frac{v}{v_0})^2\) ∴ T = 273 (1.5)2 = 614.25 K = 341.25 °C
2 Answers 2 views
The velocity of sound in air at 27 °C is 340 m/s. Calculate the velocity of sound in air at 127 °C.
Given: T1 = 27 °C = 27 + 273 = 300 K, v1 = 340 m/s, T2 = 127 °C = 127 + 273 = 400 K To find: Velocity (v2) Formula: \(\frac{v_1}{v_2}=\sqrt{\frac{T_1}{T_2}}\) Calculation: From formula, v2 = v1 \(\sqrt{\frac{T_2}{T_1}}\) = 340, \(\sqrt{\frac{400}{300}}\) =...
2 Answers 1 views
The velocity of sound in air at NTP is 330 m/s. What will be its value when temperature is doubled and pressure is halved?
Correct option is: (D) \(\frac{330}{\sqrt{2}}\) m/s
2 Answers 1 views
If pressure of air gets doubled at constant temperature then velocity of sound in air ………… .
(B) remains unchanged
2 Answers 1 views
The wavelength of sound in air is 1.5 m and that in liquid is 2 m. If the velocity of sound in air is 330 m/s, the velocity of sound in liquid is
Correct option is: (B) 440 m/’s
2 Answers 6 views
The velocity of sound in a gas is 340 m/s at the pressure P, what will be the velocity of the gas when only pressure is doubled and temperature same?
Correct option is: (C) 340 m/s
2 Answers 1 views
A sound note emitted from a certain source has a velocity of 300 m/s in air and 1050 m/s in water. If the wavelength of sound note in air is 2 m
Correct option is: (C) 7 m
2 Answers 1 views
If the velocity of sound in hydrogen is 1248 m/s, the velocity of sound in oxygen is (A) 1248 m/s (B) 624 m/s
Correct option is: (C) 312 m/s
2 Answers 1 views
Calculate the increase in velocity of sound when the temperature changes from `-3^@C` to `27^@C`.Velocity of sound at `-3^@ C` is `300 ms^(-1)`.Given
Correct Answer - `20 ms^(-1)`
2 Answers 1 views