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

The sun radiates electromagnetic energy at the rate of 3.9×1026W. Its radius is 6.96×108m. If the distance from the sun to the earth is 1.5×1011m, then the intensity of sunlight on earth's surface will be (in W/m2):

A
1.38×103
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
2.76×104
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
5.52×105
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 1.38×103
Intensity of sunlight at earth surface, I=Rate of energy radiated4πR2 where R is the distance of earth from sun.

I=3.9×10264π×[1.5×1011]2

I=1.38×103W/m2

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Nuclear Fusion
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon