Direction: In the Following Questions, A Statement of Assertion (A) I...
Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A). As planets are of larger size than stars and much closer to the earth, planets can be considered as a collection of large number of point sized sources of light. The total variation in the amount of light entering our eye from all these individual point sized sources will average out to zero which nullifies the twinkling effect of each other. Therefore, planets do not twinkle.
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Direction: In the Following Questions, A Statement of Assertion (A) I...
Assertion (A): The stars twinkle while the planet does not.
Reason (R): The stars are much bigger in size than the planets.
The correct answer is option B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
Explanation:
The assertion states that stars twinkle while the planets do not. This is a well-known observation and can be confirmed by anyone who looks at the night sky. On the other hand, the reason given for this assertion is that stars are much bigger in size than planets.
The reason is not a correct explanation for the given assertion. The twinkling of stars is caused by the Earth's atmosphere. When starlight passes through the Earth's atmosphere, it gets refracted or bent due to the varying density of air. This refraction causes the starlight to appear to twinkle or flicker. Planets, on the other hand, are much closer to us than stars, and their light does not have to pass through as much atmosphere. As a result, the light from planets does not get refracted as much, and they do not appear to twinkle.
The size of the stars compared to planets is not the reason for their twinkling. Twinkling is solely dependent on the atmospheric conditions through which the light passes. Even though stars are much bigger in size than planets, their twinkling is not related to their size but to the Earth's atmosphere.
In conclusion, both the assertion and reason are true. Stars do twinkle while planets do not. However, the reason given for this is incorrect. The twinkling of stars is caused by atmospheric effects, not the size of the stars compared to planets.
Direction: In the Following Questions, A Statement of Assertion (A) I...
Yes A is correct
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