When a body of refractive index = 1 . 4 is put into a liquid, the body becomes invisible. What would be the refractive index of the medium?

Step-by-step solution

A body becomes invisible when placed in a liquid if the refractive index of the body is equal to the refractive index of the liquid medium. This is because there is no refraction or reflection at the interface between the body and the liquid, as the light rays pass through without changing their path. Given the refractive index of the body _ body = 1.4 . For the body to be invisible, the refractive index of the liquid _ liquid must satisfy the condition _ liquid = _ body . Therefore, _ liquid = 1.4 . Answer: =1.4