Physics
The increasing order of the refractive index of certain materials is (left to right) ________

Rock Salt, Ice, Benzene, Kerosene
Ice, Kerosene, Benzene, Rock Salt
Rocksalt, Benzene, Kerosene, Ice
Kerosene, Ice, Benzene, Rock Salt

ANSWER DOWNLOAD EXAMIANS APP

Physics
The wall of a dam is broader at the base

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

ANSWER DOWNLOAD EXAMIANS APP