Basic General Knowledge
To produce sound it is necessary that

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

ANSWER DOWNLOAD EXAMIANS APP

Basic General Knowledge
Gopal Krishna Gokhale

All of the listed here
founded the servants of India Society
served as President of the Indian National Congress in 1907
started as a maths teacher and rose to the position of the principal of Ferguson College, Pune

ANSWER DOWNLOAD EXAMIANS APP