A light pointer fixed to one prong of a ...

A light pointer fixed to one prong of a tuning fork touches gnetly a smoked vertical plate. The fork is set vibrating and the plate is allowed to fall freely. 8 complete oscilllations are counted when the plate falls through 10cm.What is the frequency of the tuning fork?

112 Hz

56 Hz

8/7 Hz

7/8 Hz

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

RACE
ALLEN |Exercise Basic Maths (Wave Motion & Dopplers Effect) (Superposition of waves interfarence, beats)|15 Videos
RACE
ALLEN |Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|25 Videos
RACE
ALLEN |Exercise Basic Maths (Oscillations) (Simple pendulum and types of SHM)|17 Videos
NEWTONS LAWS OF MOTION
ALLEN |Exercise EXERCISE-III|28 Videos
SIMPLE HARMONIC MOTION
ALLEN |Exercise Example|1 Videos

Similar Questions

Explore conceptually related problems

A vibrating string of certain length l under a tension T resonates with a mode corresponding to the first overtone (third harmonic ) of an air column of length 75 cm inside a tube closed at one end. The string also generates 4 beats//s with a tuning fork of frequency n . Now when the tension of the string is slightly increased the number of beats reduces to 2 per second. Assuming the velocity of sound in air to 340 m//s , the frequency n the tuning fork in H_(Z) is (a) 344 (b) 336 (c ) 117.3 (d) 109.3

A sonometer wire under tension of 64 N vibrating in its fundamental mode is in resonance with a vibrating tuning fork. The vibrating portion of the sonometer wire has a length of 10 cm and mass of 1 kg. The vibrating tuning fork is now moved away from the vibrating wire with a constant speed and an observer standing near the sonometer hears one beat per second. Calculate the speed with which the tuning fork is moved, if the speed of sound in air is 300 m/s.

An organ pipe of length L open at both ends is found to vibrate in its first harmonic when sounded with a tuning fork of 480 Hz. What should be the length of a pipe closed at one end, so that it also vibrates in its first harmonic with the same tuning fork ?

When two tuning forks (fork 1 and fork 2 ) are sounded simultaneously, 4 beats per second are heard. Now, some tape is attached on the prong of the fork 2 . When the tuning forks are sounded again, 6 beats per second are heard. If the frequency of fork 1 is 200 Hz , then what was the original frequency of fork 2 ?

When tuning forks A and B are sounded together, 20 beats are produced in 8 second between them. (i.e. beat frequency is (20)/(8) =2.5 Hz). Now, when some wax is applied on one of these tuning forks, 32 beats are produced in 8 s. If frequency of that fork on which wax is not applied is 512 Hz then find frequency of another tuning fork, before and after applying wax.

Vibrating tuning fork of frequency n is placed near the open end of a long cylindrical tube. The tube has a side opening and is fitted with a movable reflecting piston. As the piston is moved through 8.75 cm , the intensity of sound changes from a maximum to minimum. If the speed of sound is 350 m//s . Then n is

Two metallic plate A and B , each of area 5 xx 10^(-4)m^(2) , are placed parallel to each at a separation of 1 cm plate B carries a positive charge of 33.7 xx 10^(-12) C A monocharonatic beam of light , with photoes of energy 5 eV each , starts falling on plate A at t = 0 so that 10^(16) photons fall on it per square meter per second. Assume that one photoelectron is emitted for every 10^(6) incident photons fall on it per square meter per second. Also assume that all the emitted photoelectrons are collected by plate B and the work function of plate A remain constant at the value 2 eV Determine (a) the number of photoelectrons emitted up to i = 10s, (b) the magnitude of the electron field between the plate A and B at i = 10 s, and (c ) the kinetic energy of the most energotic photoelectrons emitted at i = 10 s whenit reaches plate B Negilect the time taken by the photoelectrons to reach plate B Take epsilon_(0) = 8.85 xx 10^(-12)C^(2)N- m^(2)

ALLEN -RACE-Basic Maths (Wave Motion & Dopplers Effect) (Fundamental)

Two particle of medium disturbed by the wave propagation are at x(1)=0...
Text Solution
|
Two small boats are 10m apart on a lake. Each pops up and down with a ...
Text Solution
|
A uniform rope of mass M=0.1kg and length L=10m hangs from the celling...
Text Solution
|
A uniform rope of length 12 m and mass 6 kg hangs vertically from a ri...
Text Solution
|
The displacement wave in a string is y=(3 cm)sin6.28(0.5x-50t) where x...
Text Solution
|
A sinusoidal wave propagates along a string. In figure (a) and (b) 'y'...
Text Solution
|
Graph shows three waves that are separately sent along a string that i...
Text Solution
|
The following figure depicts a wave travelling in a medium. Which pair...
Text Solution
|
A transverse periodic wave ona strin with a linear mass density of 0.2...
Text Solution
|
The figure shows four progressive wave A,B,C & D. It can be concluded ...
Text Solution
|
Under similar conditions of temperature and pressure, In which of the ...
Text Solution
|
The velocity of sound in a gas at temperature 27^@C is V then in the s...
Text Solution
|
The frequency of a tunning fork is 384 per second and velocity of soun...
Text Solution
|
Ultrasonic, infrasonic and audio waves travel though a medium with spe...
Text Solution
|
Consider a wave represented by y=cos(500t-70x) where y is in millimetr...
Text Solution
|
The frequency of a man's voice is 300 Hz and its wavelength is 1 meter...
Text Solution
|
A light pointer fixed to one prong of a tuning fork touches gnetly a s...
Text Solution
|
Which of the following expressions is that of a simple harmonic progre...
Text Solution
|
If the density of air at NTP is 1.293kg//m^(3) and gamma=1.41, then th...
Text Solution
|
Light can travel in vacuum whereas sound can not do so. Why?
Text Solution
|