Which of the following arrangements in the sequence shown can be used to obtain a pure spectrum of white light?
A
source, slit, converging lens, prism, converging lens, screen.
B
source, slit, diverging lens, prism, diverging lens, screen.
C
source, converging lens, prism, diverging lens, screen.
D
source, slit, prism, diverging lens, converging lens, screen.
E
source, slit, prism, diverging lens, sreen.
Verified Correct Answer: A.
Physical Principles & Numerical Solution
Dispersion is the separation of white light into its component colours.
The correct sequence of arrangement that can be used to obtain pure spectrum is as follows; source, slit, converging lens, prism, converging lens, screen.
Source: Myschool Past Questions Archive (Record #28841)