Question

Name two object which are good conductor for sound

Answer 1

well all solids are very good coductor of sound eg. desk,wall etc.

Answer 2

hii dear here is your answer ...

ALUMINIUM And COPPER are the objects which are good conductor for sound ...
In aluminium speed of sound is 6,320/sec
In copper speed of sound is 4,600/sec

hope it helps you......
:-)