Sun radiates energy in all directions. The average energy received at earth is 
. The average distance between the earth and the sun is 
. If this energy is released by conservation of mass into energy, then the mass lost per day by the sun is approximately (Use 1day 
)
Text Solution
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The sun radiates energy in all directions in a sphere. At a distance 
, the energy received per unit area per second is 1.4 kJ (given). Therefore, the energy released in area 
per second is 
joule. The energy released per day 
, where 
.
Thus, 
The equivalent mass is
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