If a star radiates energy at the rate of 5 x 1020 Js-1, what is the r – McqOptions

MCQOPTIONS

1.	If a star radiates energy at the rate of 5 x 1020 Js-1, what is the rate at which its mass is decreasing?
A.	5.54 x 109 kgs-1
B.	4.44 x 109 kgs-1
C.	3.44 x 109 kgs-1
D.	2.44 x 109 kgs-1
Answer» B. 4.44 x 109 kgs-1

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