+91-87964 74404
FlagBACK
Question icon
Grade 11General Physics

the frequency of first overtone of a closed organ pipe of length L is f1. a hole is made at a distance L/6 from the closed end. now the frequency of first overtone of open pipe is f2. then ratio of f1/f2 is ?
….…..the problem is i don’t understand how will the wavelength of sound will change when hole is made ….….well the is 5/8 ….….

Profile image of shashank
11 Years agoGrade 11
Answers icon

1 Answer

Profile image of Abhishek Kumar
11 Years ago
When the hole is made, the hole acts as the pressure node or the displacement antinode as the open end of the tube acts.

f1 = 3V/4L
When, opening is made at L/6,
Length of open pipe = 5L/6
so, fundamental frequency = V/2(5L/6)
First overtone = f2 = V/(5L/6)
S0, f1/f2 = 5/8

Other Related Questions on general physics

question mark

 In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?

general physics
1 Answer Available

Last Activity: 10 Months ago

question mark
moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane
general physics
1 Answer Available

Last Activity: 3 Years ago

question mark
. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator
general physics
1 Answer Available

Last Activity: 3 Years ago

question mark
The length of a massless rod is measured using vernier callipers having 10 vernier scale divisions and least count of 0.1 mm. Two masses 1.00 ± 0.01 kg and 4.00 ± 0.02 kg are attached to its ends. If reading of vernier scale is 5 divisions coinciding with 1.3 cm, what is the % error in locating centre of mass from lighter mass
general physics
2 Answers Available

Last Activity: 3 Years ago

question mark
A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?
general physics
1 Answer Available

Last Activity: 4 Years ago