Question

Assertion: In absence of atmosphere, near horizon the son will be visible at its actual position
Reason: Due to atmospheric refraction the period of visibility of sun decreases by 2 minutes in the morning and 2 minutes in evening.

Options −
A - Both A and R are true and R is the correct explanation of A.
B - Both A and R are true but R is NOT the correct explanation of A.
C - A is true but R is false.
D - A is false but R is true.

Answer 1

Answer:

c is the correct answer

Answer 2

(C) A is true but R is false

Explanation:

• Due to atmospheric refraction, light gets deviated from its straight line path and for an observer the apparent position of the sun is different than that of its actual position

• Therefore, if there is no atmosphere, the sun will be visible at its actual position

• The period of visibility of the sun increases by two minutes in the morning and in the evening

• Therefore, the reason given is incorrect.

Hope this answer is helpful.

Know More:

Q: Why is the sun visible to us 2 minutes before the actual sunrise , and also about 2 minutes after actual sunset ?

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Q: The sun near the Horizon appears flattened at the sunset and the sunrise. Explain, Why? ​

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