Question 9:
Diagram 8.1 shows an experiment to study the effects of coloured filter on white light.
Diagram 8.1
(a) Based on Diagram 8.1,
(i) what is the coloured light seen on the white screen? [1 mark]
(ii) if the blue filter is replaced by a yellow filter, what is the coloured light seen on the white screen? [1 mark]
(b) Diagram 8.2 shows sources of blue and green lights are emitted to the white screen.
Diagram 8.2
(i) What is the coloured light seen at N? [1 mark]
(ii) Name the process of producing the coloured light at N. [1 mark]
(c) Diagram 8.3 shows a magician performing on stage. A green coloured light is shone onto the magician.
Diagram 8.3
What colour is seen on the tuxedo and trousers of the magician?
(i) Tuxedo : ………………………… [1 mark]
(ii) Trousers : ………………………… [1 mark]
Answer:
(a)(i) Blue
(a)(ii) Yellow
(b)(i) Cyan
(b)(ii) Addition of coloured lights
(c)(i) Green
(c)(ii) Black
Diagram 8.1 shows an experiment to study the effects of coloured filter on white light.
Diagram 8.1(a) Based on Diagram 8.1,
(i) what is the coloured light seen on the white screen? [1 mark]
(ii) if the blue filter is replaced by a yellow filter, what is the coloured light seen on the white screen? [1 mark]
(b) Diagram 8.2 shows sources of blue and green lights are emitted to the white screen.
Diagram 8.2(i) What is the coloured light seen at N? [1 mark]
(ii) Name the process of producing the coloured light at N. [1 mark]
(c) Diagram 8.3 shows a magician performing on stage. A green coloured light is shone onto the magician.
Diagram 8.3What colour is seen on the tuxedo and trousers of the magician?
(i) Tuxedo : ………………………… [1 mark]
(ii) Trousers : ………………………… [1 mark]
Answer:
(a)(i) Blue
(a)(ii) Yellow
(b)(i) Cyan
(b)(ii) Addition of coloured lights
(c)(i) Green
(c)(ii) Black