Physics Test - ...

In an AC circuit with resistance \(R =1 \Omega\) and oscillating potential \(v = v _{ m }\) \(\sin\omega t\), where \(v_{m}=1 V\) and \(\omega=2 \pi\) rad/s, the power dissipated at \(t=0.125\) s is:

The value of the Bulk Modulus of an ideal fluid is:

In a series resonant circuit, the AC voltage across resistance \(\mathrm{R}\), inductor \(\mathrm{L}\) and capacitor \(\mathrm{C}\), are \(5 \mathrm{~V}, 10 \mathrm{~V}\) and \(10 \mathrm{~V}\) respectively. The AC voltage applied to the circuit will be:

A body cools in 7 minutes from \(60^{\circ} \mathrm{C}\) to \(40^{\circ} \mathrm{C}\). The temperature of the surrounding is \(10^{\circ} \mathrm{C}\). The temperature of the body after the next 7 minutes will be: 

Which of these relations is wrong?

Which one of the following is the dimensional formula for \(\epsilon_{0}\)?

The rms value of an ac current of \(50 \mathrm{~Hz}\) is \(10 \mathrm{amp} .\) The time taken by the alternating current in reaching from zero to maximum value and the peak value of current will be:

Two identical tennis balls each having mass ' \(\mathrm{m}\) ' and charge ' \(q\) ' are suspended from a fixed point by threads of length ' \(l\) '. What is the equilibrium separation when each thread makes a small angle ' \(\theta\) ' with the vertical? 

A body is traveling in a straight line with a uniformly increasing speed. Which one of the plots represents the change in distance (s) traveled with time (t)?

When heat radiation falls on a surface, then it: