It does 150 damage, except to rock and steel, and does nothing against ghost.
No, not all Pokemon in Diamond can learn Hyper Beam.
hyper beam
No all normal type moves just like hyper beam are physical attacks.
Special. Another move called Giga Impact is similar to Hyper Beam, but it's a physical move instead. Same damage and side-effect.
giga impact and hyper beam either one
There is no major difference. But hyper beam works better is your pokemon has better special attack and giga impact works better for those with higher attack.
Hyper beam is a normal type move, normal type moves don't effect ghost types at all. In other words, Ghost types are strong against Hyper Beam.
It is the exactly the same as Hyper Beam, only it is a physical attack. - Pokemon Guru
Most people would suspect the move hyper beam, but its not even near that, the move that Arceus leans at level 100, Judgement.
hyper beam
Roar Of Time, Dialga's signature move, will deal great damage to the opponent Pokemon, but on your next turn, Dialga cannot attack. It is sort of like a Dragon-Type Hyper Beam.
Hyper beam.