JAMB - Physics (2007 - No. 20)
The production of pure spectrum could easily be achieved using a?
glass prism with a pin
triangular prism with two convex lens
traingular prism only
triangular prism with two concave lenses
คำอธิบาย
A pure spectrum can be produced using a triangular prism-two converging lenses and a narrow slit of white light