Physics
A copper disc has a hole. If the disc is heated, the size of the hole

Decreases
No change
Increases
First increases and than decreases

ANSWER DOWNLOAD EXAMIANS APP

Physics
The wall of a dam is broader at the base

To withstand pressure that increases in a horizontal plane
To withstand pressure that is increased with atmospheric pressure
To withstand pressure that increases with depth
Because streamlining is required

ANSWER DOWNLOAD EXAMIANS APP