AIPMT 2006 Mock Test

The power dissipated across the $8\Omega$ resistor in the circuit shown here is $2\text{W}$. The power dissipated in watt units across the $3\Omega$ resistor is :(Assume a circuit where the $8\Omega$ and $24\Omega$ resistors are in parallel, and their combination is in series with a $3\Omega$ resistor)

Kirchhoff’s first and second laws for electrical circuits are consequences of:

A transverse wave propagating along x-axis is represented by:$y(x,t)=8.0\sin (0.5\pi x-4\pi t-\frac{\pi }{4})$ Where $x$ is in meters and $t$ is in seconds. The speed of the wave is :

The time of reverberation of a room A is one second. What will be the time (in seconds) of reverberation of a room, having all the dimensions double of those of room A ?

Which one of the following statements is true?