If the distance between the earth and the sun becomes half its present value, the number of days in a year would have been
(a) 64.5 (b) 129
(c) 182.5 (d) 730
Answer: b
(24)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)