Question

what all things have the similar refractive index...except Pyrex glass and vegetable oil?​

Answer 1

Explanation:

Wesson vegetable oil has nearly the same index of refraction (n) as Pyrex glass (n = 1.474). Different types of glass have different indices of refraction. In Wesson oil, Pyrex disappears, but other types of glass, such as crown glass or flint glass, remain visible.