Does a beam of light give spectrum on passing through a hollow prism containing air? Explain.

A beam of white ligth passing through a hollow prism gives no spectrum.Explain.

Expain why white light is dispersed when passing through a prism.

Expain why white light is dispersed when passing through a prism.

Which colour deviates least on passing through prism ?

Which colour deviates most on passing through prism?

A ray of light suffers minimum deviation,while passing through a prism of refractive index 1.5 and refracting angle 60^@ ,calculate the angle of deviation and angle fo incidence.

A liquid is found to scatter a beam of light but leaves no residue when passed through the filter paper.