Assertion :The force of gravitation between a sphere and a rod of mass $M_{2}$ is $= (G M_{1} M_{2}) / r$ . Reason: Newton's law of gravitation holds correct for point masses.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
The force of gravitation between a sphere and a rod of mass will depend on length of rod and distance between center of rod and sphere.

New ton's law of gravitation holds correct for point masses, for continuous objects integration technique is used to find gravitational force.

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