(a) Dispersion of light and colours - Jamb Physics Past Questions and Answers

Question 16:

• JAMB 1994

If the Nigeria flag (green, white, green) is viewed in pure yellow light, which of the following set of colours would be observed on the flag?

A. Green, yellow, green
B. Red, yellow, red
C. Black, yellow, black
D. Green, white, green

Question 17:

• JAMB 1995

Which of the following pairs of colours gives the widest separation in the spectrum of white light?

A. Red and Violet
B. Green and Yellow
C. Red and Indigo
D. Yellow and Violet

Question 18:

• JAMB 2000

In the diagram above a beam of white light travels from a rare to a dense medium. What colours of light do the rays a, b and c respectively represents?

A. Red, green and blue
B. Green, red and blue
C. Yellow , blue and red
D. Blue , yellow and red

Question 19:

• JAMB 2003

Which of the following pairs of light rays show the widest separation in the spectrum of white light

A. Blue and red
B. Green and yellow
C. Indigo and violet
D. Orange and red

Question 20:

• JAMB 2007

The production of pure spectrum could easily be achieved using a?

A. Glass prism with a pin
B. Triangular prism with two convex lens
C. Traingular prism only
D. Triangular prism with two concave lenses