Explanation:
Low Earth orbit (LEO) satellites (altitude ~200-2000 km) have orbital period ~90 minutes. ISS orbits in ~93 min. Geostationary orbit period 24 h. Moon 27 days. Kepler's third law applies.
Explanation:
Polarization possible only for transverse waves (oscillations ⊥ propagation). Longitudinal waves (sound) cannot be polarized. Memory aid: 'Polarization ⇒ transverse nature; light is EM transverse wave'. Wave property frequently tested in competitive exams.
No comments yet. Be the first to start the discussion!