Physics
Frictional force acts in

All the directions
Upward direction
The same direction as the motion
The opposite direction of the motion

ANSWER DOWNLOAD EXAMIANS APP

Physics
Holography is a technique of

Recording a permanent three dimensional black and white photograph
Recording a permanent three dimensional photograph of a given single colour or a multicolour
Recording a permanent, sharp two diimensional black and white or multicolour photograph
Recording a permanent three dimensional multicolour photograph

ANSWER DOWNLOAD EXAMIANS APP