Physics
In spherical polar coordinates (l, q, a), q denotes the polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by

Pcosq cosa
Pcosq sina
Psinq cosa
Psinq sina

ANSWER DOWNLOAD EXAMIANS APP

Physics
Mica is used in electrical appliances such as electric iron because mica is

a bad conductor of heat but a good conductor of electricity
a good conductor of heat but a bad conductor of electricity
a bad conductor of heat as well as electricity
a good conductor of heat as well as electricity

ANSWER DOWNLOAD EXAMIANS APP

Physics
The wall of a dam is broader at the base

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

ANSWER DOWNLOAD EXAMIANS APP