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20. Suppose the gravitational force varies inversely as the nthpower of the distance. Then, the time period of a planet incircular orbit of radius R around the sun will be proportionalto:(DPMT 2006)(a) R(c) Rn-1)/2(b) R (n+l)y2(d) Rn

Answer»

so Option b is right as it is proportional to R^{n+1/2}



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