EASY

Earn 100

Which one of the following statements is not true for a flute, a musical instrument?

55.56% studentsanswered this correctly

Important Questions on Sound

MEDIUM

Science>Physics>Sound>Musical Instruments

A resonance tube is old and has a jagged end. It is still used in the laboratory to determine the velocity of sound in air. A tuning fork of frequency

512 Hz

produces first resonance when the tube is filled with water to a mark

11 cm

below a reference mark, near the open end of the tube. The experiment is repeated with another fork of frequency

256 Hz

which produces first resonance when water reaches a mark

27 cm

below the reference mark. The velocity of sound in air, obtained in the experiment, is close to

EASY

Science>Physics>Sound>Musical Instruments

What do you understand by free vibrations of a body?

EASY

Science>Physics>Sound>Musical Instruments

An air column, closed at one end and open at the other, resonates with a tuning fork when the smallest length of the column is

50 cm

. The next larger length of the column resonating with the same tuning fork is:

MEDIUM

Science>Physics>Sound>Musical Instruments

An open pipe resonates with a tuning fork of frequency

500 Hz

. It is observed that two successive nodes are formed at distances

16

and

46 cm

from the open end. The speed of sound in air in the pipe is

MEDIUM

Science>Physics>Sound>Musical Instruments

A stretched wire vibrates with a frequency of

60 Hz

when the tension in the wire is

T_{1}

and with a frequency of

130 Hz

when the tension in the wire is

T_{2}

. If the tension in the wire is

(T_{1} + T_{2}),

its frequency of vibration is

HARD

Science>Physics>Sound>Musical Instruments

In an experiment, to measure the speed of sound by a resonating air column, a tuning fork of frequency

500 Hz

is used. The length of the air column is varied by changing the level of water in the resonance tube. Two successive resonances are heard at air columns of length

50 .7 cm

and

83 .9 cm

. Which of the following statements is (are) true?

EASY

Science>Physics>Sound>Musical Instruments

In a parallel LCR circuit, the current at resonance will be

HARD

Science>Physics>Sound>Musical Instruments

A student is performing an experiment using a resonance column and a tuning fork of frequency

244 s^{- 1}

. He is told that the air in the tube has been replaced by another gas (assume that the column remains filled with the gas). If the minimum height at which resonance occurs is

(0.350 \pm 0.005) m

, the gas in the tube is (Useful information:

\sqrt{167 R T} = 640 J^{\frac{1}{2}} m o l^{- \frac{1}{2}}; \sqrt{140 R T} = 590 J^{\frac{1}{2}} m o l^{- \frac{1}{2}}

. The molar masses

M

in grams are given in the options. Take the values of

\sqrt{\frac{10}{M}}

for each gas as given there.)

EASY

Science>Physics>Sound>Musical Instruments

Consider a driven damped mechanical oscillator is in resonance. Which of the following statements is true ?

EASY

Science>Physics>Sound>Musical Instruments

The phenomenon that occurs when the frequency of forced vibrations on an object matches the natural frequency of that object, and produces a dramatic increase in amplitude is called

HARD

Science>Physics>Sound>Musical Instruments

A student is performing the experiment of the resonance column. The diameter of the column tube is

6 cm

. The frequency of the tuning fork is

504 Hz

. Speed of the sound at the given temperature is

336 m s^{- 1}

. The zero of the meter scale coincides with the top end of the resonance column tube. The reading of the water level in the column when the first resonance occurs is:

EASY

Science>Physics>Sound>Musical Instruments

Two pendulums $C$ and $D$ are suspended from a wire as shown in the given figure. Pendulum $C$ is made to oscillate by displacing it from its mean position. It is seen that $D$ also starts oscillating. Name the type of oscillation, $D$ will execute.

Question Image

EASY

Science>Physics>Sound>Musical Instruments

A tuning fork is used to produce resonance in glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of