science
Grade6
Easy
Question
We cannot see anything in a dark room due to _______ of light.
- Reverse
- Reverb
- Absence
- Attend
Hint:
Light is important for visibility of an object.
The correct answer is: Absence
- In the absence of light we cannot see anything in the room.
- When light falls on any object, it is reflected from the said object and enters our eye.
- Light stimulates the photoreceptors present in the eye and the image falls on the retina.
- From the retina brains for the signal and interpret the object and tell us what we have seen.
- Thus, without light no photoreceptors would stimulate and an image is formed on the retina.
- Therefore, light is important for vision.
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