Physics
To resolve an object in an electron microscope,

The wavelength of the electrons must be greater than the diameter of the object.
The wavelength of the electrons must be close to the diameter of the object
None of these
Both A & B

ANSWER DOWNLOAD EXAMIANS APP

Physics
The wall of a dam is broader at the base

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

ANSWER DOWNLOAD EXAMIANS APP