Dispersion of white light by a triangular prism - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2:

• JAMB 1985

A narrow beam of white light can be split up into different colours by a glass prism. The correct explanation is that

A. White light is an electromagnetic wave
B. The prism has all the colours of the white light
C. White light has undergone total internal reflection in the prism
D. Different colours of white light travel with different speeds in glass
E. White ligth consist of yellow, green and red colours

Question 3:

• 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 4:

• 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