Which of the following conditions are necessary and sufficient for total internal reflection to take place at the boundary between two optical media? i. lig...

PQ is a thin rod on a horizontal table, RS is a plane mirror inclined at \(45^\circ C\) to the horizontal as shown above. The image of PQ as seen in the mirr...

In a resonance tube experiment, a tube of fixedlength in closed at one end and several turningforks of increasing frequency used to obtainresonance at the op...

In the Figure above, QR is a vertical conductor and the current I flows from R to Q, P is a point on the horizontal plane and is to the south of the wire. Th...

Each of the figures in the diagram above represent two current carrying conductors situated close to each other. In which two diagrams, are the forces betwee...

Which of the following figures gives the correct resultant R of two vectors P and Q?

Which of the following may be used to determine relative humidity in a physics laboratory? I. Manometer II. Wet-and-dry bulb hygrometer III. Hair hygrometer ...

The diagram above shows three circuits, the internal resistances of the batteries are negligible. which of the currents is the largest

Four resistors R1, R2, R3 and R4 are connected in series as shown above, V1, V2, V3 are voltmeters connected as indicated above. Which of the following relat...