1

AIEEE 2008

MCQ (Single Correct Answer)

+4

-1

While measuring the speed of sound by performing a resonance column experiment, a student gets the first resonance condition at a column length of $$18$$ $$cm$$ during winter. Repeating the same experiment during summer, she measures the column length to be $$x$$ $$cm$$ for the second resonance. Then

2

AIEEE 2008

MCQ (Single Correct Answer)

+4

-1

A wave travelling along the $$x$$-axis is described by the equation $$y(x, t)=0.005$$ $$\cos \,\left( {\alpha \,x - \beta t} \right).$$ If the wavelength and the time period of the wave are $$0.08$$ $$m$$ and $$2.0s$$, respectively, then $$\alpha $$ and $$\beta $$ in appropriate units are

3

AIEEE 2007

MCQ (Single Correct Answer)

+4

-1

A sound absorber attenuates the sound level by $$20$$ $$dB$$. The intensity decreases by a factor of

4

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

A whistle producing sound waves of frequencies $$9500$$ $$Hz$$ and above is approaching a stationary person with speed $$v$$ $$m{s^{ - 1}}.$$ The velocity of sound in air is $$300\,m{s^{ - 1}}.$$ If the person can hear frequencies upto a maximum of $$10,000$$ $$HZ,$$ the maximum value of $$v$$ upto which he can hear whistle is

Questions Asked from Waves (MCQ (Single Correct Answer))

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