OBJECTIVE FORESTRY

FORESTRY

PLANT AND WOOD ANATOMY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What color will a red colored object appear to a human if it is illuminated by a red light?
A
Blue
B
Black
C
White
D
Red
Explanation: 

Detailed explanation-1: -What happens when red light shines on a red ball? It continues to reflect the red light, and so it is still red–but a white ball would also look red in red light, because it reflects all colors.

Detailed explanation-2: -When illuminated by red light, red light will get reflected as before and we see the red card as red. If the card is illuminated with blue light, the light gets all absorbed. No light is reflected, so the card looks black.

Detailed explanation-3: -Objects appear one color or another because of how they reflect and absorb certain colors of light. For example, a red wagon looks red because it reflects red light and absorbs blue and green light.

Detailed explanation-4: -When we look at an object and see its color, we are seeing all of the light that reflects off of that object. Red objects reflect red light, green objects reflect green light, and so on.

There is 1 question to complete.