Student Login

Home›Chapters›Wave Motion PYQs›Wave Basics & Properties of Sound›Question 35

JEE Main 2007 (AIEEE) · Wave Basics & Properties of Sound

Wave Basics & Properties of Sound question from JEE Main 2007 (AIEEE)

Q35JEE Main 2007 · AIEEEMedium

Wave Basics & Properties of Sound

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

Show answer and solution

Answer: (a)

$\Delta L = 10\log_{10}(I_1/I_2)$
$20 = 10\log_{10}(I_1/I_2) \Rightarrow I_1/I_2 = 10^2$
So the answer is (a) $100$ .

Report a mistake

More questions on Wave Basics & Properties of Sound

Which one of the following statements is true?NEET 2006 (AIPMT)
The time of reverberation of a room A is one second. What will be the time (in seconds of…NEET 2006 (AIPMT)
A point source emits sound equally in all directions in a non-absorbing medium. Two…NEET 2005 (AIPMT)
The equations of two waves acting in perpendicular directions are given as x = a cos( ω t…NEET 2000 (AIPMT)
In a sinusoidal wave, the time required for a particular point, to move from maximum…NEET 1998 (AIPMT)
A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating…NEET 1995 (AIPMT)
With the propogation of a longitudinal wave through a material medium, the quantities…NEET 1992 (AIPMT)
If the amplitude of sound is doubled and the frequency reduced to one fourth, the…NEET 1989 (AIPMT)