Oscillations and Waves-Standing Waves in Strings and Organ Pipes (NEET Physics): Questions 1 - 4 of 6

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Question number: 1

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

MCQ▾

Question

An open organ pipe is in resonance in its 2 nd harmonic with tuning fork of frequency f 1 now; it is closed at one end. If the frequency of the tuning fork is increased slowly from f l then again a resonance is obtained with a frequency f 2. If in this case the pipe vibrates n th harmonics then

Choices

Choice (4) Response
a.

n=3,f2=34f1

b.

n=5,f2=54f1

c.

n=5,f2=34f1

d.

n=3,f2=54f1

Question number: 2

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

MCQ▾

Question

The frequency of fundamental tone in an open organ pipe of length 0.48 m is 320 Hz. Speed of sound is 320 m/sec. Frequency of fundamental tone in closed organ pipe will

Choices

Choice (4) Response
a.

143.2 Hz

b.

320.0 Hz

c.

153.8 Hz

d.

160.0 Hz

Question number: 3

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

MCQ▾

Question

A source of sound placed at the open end of a resonance column sends an acoustic wave of pressure amplitude P 0 of the tube. If the atmospheric pressure is P A, then the ratio of maximum and minimum pressure at the closed end of the tube will be,

Choices

Choice (4) Response
a.

(PA+P0)

b.

(PA+2P0)(PA2P0)

c.

(PA+P0)(PAP0)

d. Question does not provide sufficient data or is vague

Question number: 4

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

MCQ▾

Question

The frequency of fundamental tone in an open organ pipe of length 0.48 m is 430 Hz. Speed of sound is 430 m/sec. Frequency of fundamental tone in closed organ pipe will

Choices

Choice (4) Response
a.

253.8 Hz

b.

260.0 Hz

c.

243.2 Hz

d.

215 Hz

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