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

Question 11:

• JAMB 1988

E,F and G are yellow, red and cyan transparent light filters respectively. The color of a white opaque object when viewed through the arrangement of the filters above is

A. Yellow
B. Red
C. Black
D. Blue

Question 12:

• JAMB 1989

When a yellow card is observed through a blue glass, the card would appear.

A. Black
B. Green
C. Red
D. White

Question 13:

• JAMB 1989

Dispersion of light by a glass prism is due to the

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

Question 14:

• JAMB 1990

When light is incident on an object which is magenta in colour, which of the following colour would be absorbed?

A. Red and blue
B. Green only
C. Red and green
D. Red only

Question 15:

• JAMB 1993

Which of the following correctly explain(s) why a green leaf appears green in bright day light? i. it absorbs only the green component of sunlight. ii. it absorbs all colour of sunlight except green. iii. it reflects only the green component of sunlight.

A. I only
B. Ii only
C. I and iii only
D. Ii and iii only