wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Assertion(A): If there were no atmosphere, the duration of the day on earth would be decreased.
Reason(R): Due to refraction in the atmosphere, the sun appears to rise earlier and sets later.

A
Both assertion and reason are true, and reason is the correct explanation of the assertion.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Both assertion and reason are true, but reason is not the correct explanation of the assertion.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Assertion is true, but reason is false.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Assertion is false, but reason is true.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Both assertion and reason are true, and reason is the correct explanation of the assertion.
Because the light from the Sun is refracted as it passes through the Earth's atmosphere, the Sun is still visible after it is geometrically below the horizon and it is visible before it rises. So, if there were no atmosphere, no refraction would take place and hence, day time would decrease.

flag
Suggest Corrections
thumbs-up
5
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Atmospheric Refraction Tackle
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon