The brilliance of a diamond is due to which phenomenon?

Chickens can see only in bright light. What type of cells is present in their retina?

The figure below shows the refraction of a ray through a prism. Copy the diagram and,ignoring dispersion at the faces $AB$ and $AC$,mark the following angles: $(i)$ The angle of incidence,$(ii)$ the angle of refraction at the face $AB$,$(iii)$ the angle of emergence,and $(iv)$ the angle of deviation.

Which liquid fills the space behind the cornea?

How is long-sightedness corrected?

Which scientist established that white light is composed of seven constituent colors?