Oscillations and Waves-Standing Waves in Strings and Organ Pipes (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 2 of 2

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Question number: 1

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

Appeared in Year: 2011

MCQ▾

Question

At 230C, a pipe open at both ends resonates at a frequency of 450 hertz. At what frequency does the same pipe resonate on a hot day when the speed of sound is 4 percent higher than it would be at 230C?

Choices

Choice (4) Response

a.

454 Hz

b.

446 Hz

c.

459 Hz

d.

468 Hz

Question number: 2

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

Appeared in Year: 2012

MCQ▾

Question

A standing wave in a pipe with a length L = 1.2 m is described y,

y(x,t)=y0sin[(2πL)x]sin[(2πL)x+π4]

Based on above information, which one of the following statement is incorrect?

(Speed of sound in air is 300 ms-1)

Choices

Choice (4) Response

a.

The frequency of the fundamental mode of vibrations is 137.5 Hz

b.

There could be a nods at x=0 and antinode at x=L2

c.

A pipe is closed at both ends

d.

The wavelength of the wave could be 0.6 m

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