Basic General Knowledge
To produce sound it is necessary that

the source may execute any type of vibrations
the vibrations of source are not necessary
the source should execute longitudinal vibrations
the source should execute transverse vibrations

ANSWER DOWNLOAD EXAMIANS APP

Basic General Knowledge
Fa-Hien was

the first Buddhist pilgrim of China to visit India during the reign of Chandragupta Vikramaditya
None of these
the discoverer of Puerto Rico and Jamaica
the first Buddhist pilgrim of India to visit China

ANSWER DOWNLOAD EXAMIANS APP