_________ lenses are used in camera lenses.

"____________" lenses are used in electron microscope.

_________ lenses are used in making microscope and telescope.

__________ lenses are used as eye lens of 'Galilean Telescope'

________ lenses are used is placed at infinity a ________ is formed at the focus .

_______ lenses are used as wide angle spy hole in doors.

Assertion:- Fused glass not flint glass, are used to make camera lenses. Reason:- Fused glass has lesser refractive index gradient with wavelength.