Class 7 Exam > Class 7 Questions > We can see an object when ita)Refract or abso...
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We can see an object when it
- a)Refract or absorb the rays of light
- b)Reflect or emit rays of light
- c)Has bright colour
- d)Has shining surface
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
We can see an object when ita)Refract or absorb the rays of lightb)Ref...
We are able to see because light from an object can move through space and reach our eyes. Once light reaches our eyes, signals are sent to our brain, and our brain deciphers the information in order to detect the appearance, location and movement of the objects we are sighting at.
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Most Upvoted Answer
We can see an object when ita)Refract or absorb the rays of lightb)Ref...
Explanation:
When we see an object, it means that light has interacted with the object and then reached our eyes. The process of vision involves the interaction of light with the object and its reflection or emission towards our eyes. Therefore, the correct answer is option 'B' - Reflects or emits rays of light.
Understanding the options:
Let's analyze the other options and understand why they are not the correct answers:
a) Refracts or absorbs the rays of light: Refraction is the bending of light when it passes from one medium to another. Absorption is the process in which light energy is absorbed by an object and converted into other forms of energy. While both of these processes are involved in the interaction of light with objects, they do not directly relate to the visibility of an object. Refraction and absorption can occur without the object being visible to us.
c) Has bright colour: Bright color is a characteristic of an object, but it does not determine whether we can see the object or not. An object can have a bright color and still not be visible if it does not reflect or emit light towards our eyes.
d) Has shining surface: A shining surface can enhance the reflection of light, but it is not the sole factor that determines visibility. Many objects with non-shining surfaces can still be visible if they reflect or emit light towards our eyes.
Why Reflects or emits rays of light is the correct answer:
When an object reflects light, it means that the light rays that fall on the object bounce off its surface and reach our eyes. This reflection allows us to see the object. Similarly, when an object emits light, it means that it produces its own light and that light reaches our eyes, enabling us to see the object.
Objects that do not reflect or emit light, such as transparent objects or objects in complete darkness, are not visible to us because there is no light reaching our eyes from those objects.
In conclusion, the visibility of an object is dependent on the object's ability to reflect or emit light, which is why option 'B' - Reflects or emits rays of light is the correct answer.
When we see an object, it means that light has interacted with the object and then reached our eyes. The process of vision involves the interaction of light with the object and its reflection or emission towards our eyes. Therefore, the correct answer is option 'B' - Reflects or emits rays of light.
Understanding the options:
Let's analyze the other options and understand why they are not the correct answers:
a) Refracts or absorbs the rays of light: Refraction is the bending of light when it passes from one medium to another. Absorption is the process in which light energy is absorbed by an object and converted into other forms of energy. While both of these processes are involved in the interaction of light with objects, they do not directly relate to the visibility of an object. Refraction and absorption can occur without the object being visible to us.
c) Has bright colour: Bright color is a characteristic of an object, but it does not determine whether we can see the object or not. An object can have a bright color and still not be visible if it does not reflect or emit light towards our eyes.
d) Has shining surface: A shining surface can enhance the reflection of light, but it is not the sole factor that determines visibility. Many objects with non-shining surfaces can still be visible if they reflect or emit light towards our eyes.
Why Reflects or emits rays of light is the correct answer:
When an object reflects light, it means that the light rays that fall on the object bounce off its surface and reach our eyes. This reflection allows us to see the object. Similarly, when an object emits light, it means that it produces its own light and that light reaches our eyes, enabling us to see the object.
Objects that do not reflect or emit light, such as transparent objects or objects in complete darkness, are not visible to us because there is no light reaching our eyes from those objects.
In conclusion, the visibility of an object is dependent on the object's ability to reflect or emit light, which is why option 'B' - Reflects or emits rays of light is the correct answer.
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We can see an object when ita)Refract or absorb the rays of lightb)Reflect or emit rays of lightc)Has bright colourd)Has shining surfaceCorrect answer is option 'B'. Can you explain this answer?
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