Question

The wavelength of light in a medium is ____ the wavelength of light in a vacuum.1) longer than2) shorter than3) equal to4) inversely proportional to

Answer 1

$The\text{ }wavelength\text{ }of\text{ light }in\text{ a medium }is\text{ }shorter\text{ than }the\text{ wavelength o}f\text{ the light }in\text{ a vaccum}$