## Question

To raise the pitch of a stringed musical instrument, the player can

### Solution

Tighten the string & Shorten the string

We know that Hence *V* can be increased by increasing *T* (i.e. by tightening the string) or by decreasing *L* (i.e. by shortening the string).

#### SIMILAR QUESTIONS

A source of sound emitting a note of frequency 200 Hz moves towards an observer with a speed *v* equal to the speed of sound. If the observer also moves away from the source with the same speed *v*, the apparent frequency heard by the observer is

The difference between the apparent frequencies of a source of sound as perceived by an observer during its approach and recession is 2% of the actual frequency of the source. If the speed of sound in air is 300 ms^{–1}, the speed of the source is

A tuning fork of frequency 480 Hz produces 10 beats per second when sounded with a vibrating sonometer string. What must have been the frequency of the string if a slight increase in the tension of the string produces fewer beats per second than before?

A train blowing its whistle moves with a constant velocity *u* away from the observer on the ground. The ratio of the actual frequency of the whistle to that measured by the observer is found to be 1.2. If the train is at rest and the observer moves away from it at the same velocity, the ratio would be given by

The intensity of sound gets reduced by 20% on passing through a slab. The reduction in intensity on passage through two consecutive slabs is

Two sounding bodies producing progressive waves given by

are situated very near to the ears of a person who will hear

An organ pipe *P*_{1}, closed at one end vibrating in its first harmonic and another pipe *P*_{2}, open at both ends vibrating in its third harmonic, are in resonance with a given tuning fork. The ratio of the lengths of *P*_{1} and *P*_{2}is

Two identical straight wires are stretched so to produce 6 beats per second when vibrating simultaneously. On changing the tension slightly in one of them, the beat frequency remains unchanged. Denoting by *T*_{1} and*T*_{2} the higher and the lower initial tensions in the strings, then it could be said that while making the above changes in tension.

The time taken by a particle executing simple harmonic motion of time period *T* to move from the mean position to half the maximum displacement is

One end a long metallic wire of length *L* is tied to the ceiling. The other end is tied to a massless spring of spring constant *K*. A mass *m* hangs freely from the free end of the spring. The area of cross-section and Young’s modulus of the wire are *A* and *Y* respectively. If the mass is slightly pulled down and released, it will oscillate with a time period given by