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JEE Main Physics question

PhysicsGravitationJEE Main

The density of the core of a planet is and that of the outer shell is . The radii of the core and of the planet are and respectively. The gravitational acceleration at the planet's surface is the same as at a depth (i.e. at the core–shell boundary). What is the ratio ?

Answer: 3.25

Solution

. Using : and

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Question ID VK-154805