Question

A piece of glass immersed in a colourless liquid is not visible. It is so because ______.

Options

• glass and liquid are both colourless

• both are of same density

• both are of same refractive index

• glass reflects the light transmitted by the liquid

Answer 1

A piece of glass immersed in a colourless liquid is not visible. It is so because both are of same refractive index.

Explanation:

A piece of glass immersed in a colourless liquid is not visible because when the refractive index of the glass and the liquid are the same, light passes through without bending or scattering, making the glass appear invisible in that liquid.