Galilean telescope

Keplerian telescope

Newtonian telescope

Schmidt telescope

P waves move faster and are the first to arrive at the surface.

P waves can travel through gaseous, liquid and solid materials.

Seismographs located beyond 145° from epicentre can record the arrival of P waves.

P waves have maximum area covered under its shadow zone.

3.6 × 10⁶ J

3.6 × 10³ J

10³ J

1 J

The magnetic field inside the solenoid is uniform.

The current-carrying solenoid behaves like a bar magnet.

The magnetic field inside the solenoid increases with increase in current.

If a soft iron bar is inserted inside the solenoid, the magnetic field remains the same.