Physics

A square loop of side l is laced at a separation of with a very long wire AB, in same plane. If the current through BA is increasing in the direction shown, the induced current produced in the loop is

Electric field in a region is $\overrightarrow{E}=3\widehat{j}N/C.$  Equipotential surfaces are parallel to

Which of the following represent the variation of intensity of magnetization (I) versus magnetizing force (H) graph for a diamagnetic substance?

Two blocks of masses 6 kg and 4 kg are connected by a rope of mass 2 kg are resting on a frictionless floor as shown in the following figure. If a constant force of 60 N$$ is applied to 6 kg block, then the tension in the rope at points A,B$$ and C$$ are, respectively, given by

Power factor of series LCR circuit at resonance is

Density of nucleus is of the order of

A photocell works on the principle of

Determine the energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 3R

A $1\mu F$ capacitor is charged by $100V$ supply. It is then disconnected from the supply and is connected to another uncharged $1\mu F$ capacitor. The percentage of energy lost in form of heat and electromagnetic radiation is

In a meter bridge experiment, the galvanometer shows a null point when jockey is pressed at 40.0cmusing a standard resistance of 100   $\Omega$ as per the diagram. The least count of the scale used is 1 mm. The unknown resistance is nearly