A pipe closed at one end is 1.0m long. The air in the pip...
A pipe closed at one end is 1.0m long. The air in the pipe is set into vibration and a fundamental note of frequency 85Hz is produced. Calculate the velocity of sound in the air. (Neglect end correction).
340.0ms-1
33Oms-1
170ms-1
85.0ms-1
42.5ms-1
Correct answer is A
L = λ/4; λ= 4 = 4m
v = fλ = 85 x 4 = 340ms-1
In the absence of gravitational force, the weight of the body is ...
The instrument used to measure relative humidity is a ...
Which of the following physical quantities are derived? i. Area ii. Thrust iii. Pressure iv. M...
As the pressure of a fluid increases, its viscosity ...
If a sound wave goes from a cold air region to a hot air region, its wavelength will? ...
If the volume of a gas is recorded as 76cm3 at a temperature of 27°C with a pressure of 800mmHg....
A body executing a simple harmonic motion has an angular velocity of 22 radians per second. If ...
A boy in a barber's shop sits between two parallel mirrors. The number of images observed by him...