Speed of sound remains same at all frequencies

Speed of sound is faster at higher frequencies

Speed of sound is slower at higher frequencies

Speed of sound is slower at higher wavelengths

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