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The energy reveived from the sun by the ...

The energy reveived from the sun by the earth and surrounding atmosphere is 2 cal `cm^(-2)` "min"`^(-1)` on a surface normal to the rays of sun.
Q. What is the total energy received, in joule, by the earth and its atmosphere?

A

`3.66xx10^(14)` mega gram `min^(-1)`

B

`3.66xx10^(16)` mega gram `min^(-1)`

C

`3.66xx10^(-15)` mega gram `min^(-1)`

D

`3.66xx10^(10)` mega gram `min^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
We know that `4HrarrHe+Q`
(As by fusion of four atoms of `H_2`, one Helium atom is formed and energy is released)
`Q`(in a.m.u.) `=(4xx1.008145)-4.003874`
`=0.028706` a.m.u.
`=0.028706xx931xx1.6xx10^(-19)`
Mass of hydrogen required is
`(4.032580xx1.659xx10^(-24)xx2.33xx10^(28))/(0.028706xx931xx1.6xx10^(-19))`
`=3.6673xx10^(16)` mega gram `min^(-1)`
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