Physics
The device used to convert solar energy into electricity is

Electrochemical cell
Daniell cell
Galvanic cell
Photovoltaic cell

ANSWER DOWNLOAD EXAMIANS APP

Physics
Planets are

luminous heavenly bodies revolving around a star
luminous heavenly bodies that twinkle
non-luminous heavenly bodies
luminous heavenly bodies that do not twinkle

ANSWER DOWNLOAD EXAMIANS APP