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Q.

The ratio of radii of earth to another planet is 2/3 and the ratio of their mean densities is 4/5 . If an astronaut can jump to a maximum height of 1.5 m on the earth, with the same effort, the maximum height he can jump on the planet is :

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a

0.8 m

b

l-25 m

c

1 m

d

0.5 m

answer is B.

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Detailed Solution

∵mgh = constant
∴h2h1=g1g2

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