Dispersion of light and colours - Jamb Physics Past Questions and Answers

Question 11:

• 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 12:

• 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

Question 13:

• JAMB 2010

Dispersion occurs when white light passes through a glass prism because of the

A. Different hidden colours in the glass
B. Different speeds of the colour in the glass
C. Defects in the glass
D. High density of the glass

Question 14:

• JAMB 2011

When a red rose flower is observed in blue light, what colour does the observer see?

A. Red
B. Blue
C. Magenta
D. Yellow
E. No correct option

Question 15:

• JAMB 2015

Primary colours of light are

A. Red, blue and green
B. Cyan, magneta and yellow
C. Black, blue and green
D. None of these colours