The concepts of assertion and reasoning have been stated in class 9 syllabus of science for students.
assertion refers to a situation when one is very confident about what he/she is saying. So it involves a positive belief about something and it is generally a fact or a belief.
On the other hand, in case of reasoning, one needs to be presented with a number of logical facts or figures before he/she can believe upon anything. So this is used for methodology and other cases.
But both these terms might not be in relation with one another at the same time.
Example:
Assertion: Light is not considered as matter.
Reason: Light does not occupy space, has no mass or volume.
(a) Both assertion and reason are correct and reason is the correct explanation for assertion.
(b) Both assertion and reason are correct and reason is not the correct explanation for assertion.
(c) Assertion is correct but reason is incorrect.
(d) Both assertion and reason are incorrect.
Complete step by step answer:
> First, let us understand about matter in detail.
> Matter is a substance that has inertia and occupies physical space. As considered to modern physics, matter of various types of particles, each with mass and size. Matter can exist in several states. The three most common states are known as solids, liquids and gas. It is important to know that plasma is not a common state of matter on earth, but it is considered as the most common state in the universe.
Now, let us know about light.
Light is electromagnetic waves, its speed in vacuum is constant, it interacts with matter as a wave-like or a particle-like. In photoelectric effect it behaves as a particle –like, while in the interference it behaves as a wave-like.
For a more in-depth look, if we recall the definition of matter, “matter is anything that has mass and takes up space”. Well, light doesn’t have mass, and it doesn’t take up space; photons don’t repel each other when they get too close together the way atoms do. So, no, light doesn't matter.
Hence, both assertion and reason are correct and reason is the correct explanation for assertion. Therefore, option A is the required answer.
Gaurav Seth 3 years, 8 months ago
The concepts of assertion and reasoning have been stated in class 9 syllabus of science for students.
assertion refers to a situation when one is very confident about what he/she is saying. So it involves a positive belief about something and it is generally a fact or a belief.
On the other hand, in case of reasoning, one needs to be presented with a number of logical facts or figures before he/she can believe upon anything. So this is used for methodology and other cases.
But both these terms might not be in relation with one another at the same time.
Example:
Assertion: Light is not considered as matter.
Reason: Light does not occupy space, has no mass or volume.
(a) Both assertion and reason are correct and reason is the correct explanation for assertion.
(b) Both assertion and reason are correct and reason is not the correct explanation for assertion.
(c) Assertion is correct but reason is incorrect.
(d) Both assertion and reason are incorrect.
Complete step by step answer:
> First, let us understand about matter in detail.
> Matter is a substance that has inertia and occupies physical space. As considered to modern physics, matter of various types of particles, each with mass and size. Matter can exist in several states. The three most common states are known as solids, liquids and gas. It is important to know that plasma is not a common state of matter on earth, but it is considered as the most common state in the universe.
Now, let us know about light.
Light is electromagnetic waves, its speed in vacuum is constant, it interacts with matter as a wave-like or a particle-like. In photoelectric effect it behaves as a particle –like, while in the interference it behaves as a wave-like.
For a more in-depth look, if we recall the definition of matter, “matter is anything that has mass and takes up space”. Well, light doesn’t have mass, and it doesn’t take up space; photons don’t repel each other when they get too close together the way atoms do. So, no, light doesn't matter.
Hence, both assertion and reason are correct and reason is the correct explanation for assertion. Therefore, option A is the required answer.
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