Some pieces of glass are seen immersed in a liquid. On heating the liquid at a certain temperature they are not seen. Explain.
Dear student,
Pieces of glass immersed in a liquid are visible as they bend or refract the light that shines through them, a property responsible due to the difference in speed of light in different medium (refractive index). However, as we increase the temperature of liquid, the refractive index of liquid decreases, which leads to less bending of light, that gradually may result in no bending at certain temperature. Hence, glass pieces are not visible when liquid in which they are immersed is heated to a certain temperature.
Regards
Pieces of glass immersed in a liquid are visible as they bend or refract the light that shines through them, a property responsible due to the difference in speed of light in different medium (refractive index). However, as we increase the temperature of liquid, the refractive index of liquid decreases, which leads to less bending of light, that gradually may result in no bending at certain temperature. Hence, glass pieces are not visible when liquid in which they are immersed is heated to a certain temperature.
Regards