A satellite A of mass m is at a distance of r from the centre of the earth. Another satellite B of mass 2m is at a distance of 2r from the earth’s centre. Their time periods are in the ratio of
(a) 1 : 2 (b) 1 : 16
(c) 1 : 32 (d) 1: 2√2
Answer: d
(1)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)