Physics
A drop of liquid assumes spherical shape because:

A sphere has the least surface area for a given volume
Inter molecular forces are weak in liquids
A sphere has the largest surface area for a given volume
Intermolecular forces are strong in liquids

ANSWER DOWNLOAD EXAMIANS APP

Physics
The law of conservation of energy states that

Energy can neither be created nor destroyed
Energy can either be created or destroyed
Energy can either be created nor destroyed
Energy can neither be created or destroyed

ANSWER DOWNLOAD EXAMIANS APP